Sounds just like a bug to me hun.i was very very poorly from the day I got home after surgery for 3days. Wen I spoke to my Surgeon they sed if you going to be bad after surgery it’s usually with in the 1st 24hours off the anasthetic or morphine. This was more than that. I actually had a bad allergic reaction to the antibiotics so only had them 3 days then stopped been fine since. Your immune system might be low so u have picked up a bug hun. Just make sure u rest.xx