It's not uncommon for them to carry an egg around for quite a while if it's large. The main factors in determining whether it's "too long" are #1) Is the egg in the Oviduct or was it deposited into the free-abdomen; obviously if the egg didn't drop into the Oviduct then surgery isn't an option; I'm assuming that your bird's egg is in the Oviduct since she had an x-ray done and they're waiting for her to pass it, so that's good...and #2) Is the bird displaying any outward symptoms of pain, anorexia, or any neurological issues like being disoriented, going in and out of consciousness, losing any feeling in their legs (due to the egg pushing on the sciatic nerve), any bleeding from the cloaca/vent, etc. As long as the bird is awake and alert, is eating and drinking normally, isn't showing any signs of pain or numbness in their legs, etc., then it's okay to wait for the egg to pass...What typically "forces the issue" is when either the egg ruptures/breaks inside of the bird's Oviduct and then you've got a huge risk for egg-Peritonitis, which is fatal if not taken care of by evacuating the remnants from the Oviduct with a vacuum, flushing with antibiotic-fluids, and then putting the bird on a round of antibiotics to fight-off any bacterial infections from starting, OR usually what "forces the issue" is when another egg is formed and moves into the Oviduct...That's when you'll typically see the bird stop eating, start showing signs of pain, their legs go numb, they start becoming very neurological and disoriented, and then that calls for surgery to get the egg out of there before the extreme pressure causes damage to the Oviduct and surrounding structures/organs.
As long as your bird is still acting normally, eating normally, walking normally, and is not neurological, then it's okay to keep waiting..The problem is that you have no idea when another egg is going to form and make it's way into the Oviduct...
***Are they still giving her injections of Oxytocin? They should be giving her Oxytocin injections at least every other day, as the one they gave her days ago will have long wore-off now...And are they doing any other things to try to relax her abdominal/pelvic muscles and promote passing the egg, such as putting her in a small room with a running shower/sink full of tons of steam, and then allowing her to sit in a container of very warm water that covers her vent completely and also goes up over her lower abdomen/pelvis? Usually the CAV will give regular injections of Oxytocin either every 12 hours or every 24 hours and then a couple of hours after giving the most recent injection of Oxytocin they will then put the bird into a very small room with running hot-water creating a ton of steam while having the bird sit/lay in a container of very warm water covering her vent and lower abdomen...The other thing they should be doing besides the regular Oxytocin injections is creating a very small, dark, warm place for her to be staying in full-time that contains some type of "nesting material". This greatly influences her hormones to go nuts, makes them extremely "broody", and in-combination with the Oxytocin injections usually does encourage them both physically and psychologically to lay the egg...So if they are keeping her inside of some type of Brooder, or better-yet a small Incubator that is both heated and gives her oxygen, then they should create a "nesting" environment inside of the Incubator, using either a blanket, towels, or simply "nesting materials" like bedding/shredded paper, etc., and then also covering all windows of the Incubator/Brooder so that it's not only creating a very small, dark, warm "nesting" area for her, but also giving her complete PRIVACY, which is very, very important...It's the same concept as creating a small, dark, warm box with blankets/towels/nesting material like hay and placing it in a quiet area that is away from all people and other animals, thus giving privacy to a pregnant female mammal, such as when trying to get a pregnant rabbit, cat, dog, guinea pig, etc. to birth their babies. So hopefully they have her incubator nice and cozy, very warm, full of things for her to use as "nesting materials", and have the incubator covered-up with towels/sheets so that it's dark and so that she can't see people constantly looking at her or walking by her. It's okay to lift the sheets over the incubator to check on her once every hour or so, to make sure she's not in distress, but I hope they aren't "bugging her" constantly or keeping her in an incubator that is out in the open of the veterinary office, with people constantly walking by her or messing with her, and with other birds and animals around her, and that they do have the incubator completely covered-up so to give her privacy and to make her feel safe, secure, and like she has privacy...It's quite possible for pregnant animals or birds carrying eggs to purposely not want to lay their egg or go into labor because they don't feel that it's a safe place to have their babies or for their egg to be...
so yes, I am considering these implants a lot even if it drains my wallet into oblivion... she's only 7, she could easily be with me for at least the next 20 years and I plan on doing everything I can to make that happen!
Meanwhile, as Christa wrote, try to find something that will occupy your mind. It's not easy, but definitely "doable".
