First time IVF, TTC 4+ years

TTC 4+ years and this is our first round of IVF. I completed my egg retrieval on Monday, 4/19/21, I then tried to squeeze into my work pants tuesday, 4/20/21, realizing they were too tight a while later, I undid them and walked around with them undone. Been wearing sweats and stretch pants since. I noticed the smaller bruise around my belly button Monday night when I got home and figured it was from my pants. Then woke up today to find this large one underneath. I went to the doctor and they did an ultrasound which he said was normal. No other issues other than still swelling and bloating. Did this happen to anyone else? Is it possible it really is just from my pants and the lower bruising just took longer to develop

?