Leyshoja I'd be ****ed off too. I left my first clinic after they failed to do BTs prior to my FET. I mean how bloody ridiculous relying on a OPK for a $2k (or whatever ) cycle. My next clinic were horrified.
I'm going to give you the advice I would give myself if I were in your current situation...so take it with a grain of salt if you must. If I were you I'd shelve that embie. Go to SA, get a young donor of your choosing. Have a bloody good holiday while you're at it. You'll always have that embie here as a 'back up' should you need it if SA results in no pregnancy & no frosties. The other thing to consider is do you want more than one child (and this is very real consideration to take using a 20 something year olds eggs). If you do, is it important that siblings be 100% genetically related to each other? If so a SA cycle is the way to go so you have the best chance of getting viable frosties for later. I was in this position, with 1xOE embie left here after I got utd with Edie, we ended up donating it to research as we wanted Edie to have a full sibling if possible... I also didn't want another possible pregnancy with chromosomal abnormalities.
Re - immune issues - you can do a basic immune protocol that's not going to cause any major complications - prednisilone antibiotics, clexane, asprin ... Find a FS who will assist. I think you're in Brissy - ring for an appt with Wazza now while you're making up your mind, you can always cancel.
I hope I don't sound too pushy but I get so frustrated seeing us get the run around. x