Might be OHSS. As you know, OHSS can get much worse. Keep your clinic informed.
Whether you get a transfer on day 3 or 5 makes no difference to the OHSS, but the longer they wait, the longer they have to see if your symptoms progress to a more severe case. If they do, then your transfer just might be cancelled.
OHSS is caused by the hCG from the trigger shot and can be continued and made worse by the much greater levels of hCG that result from from a pregnancy.
Avoid IVF and surrogacy in Ukraine. Ukrainian centers pay shills to post here under numerous sock accounts pretending to be patients in Ukraine. Centers using such deceptive advertising cannot be trusted and should be avoided.
I just want you to know that i had the same symptoms starting the day after er. I was really scik = jugged pepto and gatorade for 5 days - had the doc check me out and they said there was a small amount of fluid - you have to be really careful with over stim but i was jsut fine and had a day 5 transfer - bfn - didnt feel better for about 2 weeks after progesterone got out of my system. i had er today so start the evil progsterone tonite so well see how i feel tommorow!!! i also did ap this sycle to avoid being so sick and lower meds. Feel better