My 23 year old daughter had gastric sleeve surgery on 3/4/2020 due to her polysistic ovary disorder - it seemed to have gone extremely well - she tolerated things well and drs were very pleased . About a week later , she developed a low grade fever which has persisted everyday all day ever since -6 weeks ago now ! She says she has no other symptoms but did have a bit of a headache the first few days. The fever has been between 99'.5--101.3. Though she claims it's rarely over 100. Something. I've been extremely concerned - this is very bad timing obviously . Her live in fiancé has been forced into going into work ( and he's non essential to boot ) until the doctors finally ordered a COVID19 test 10 days ago ( 4,5 weeks after surgery )! Then she had to wait 6 dats to get result which was negative . That's the hoof news but bad news is she still has this fever . They did bloodwork and it was fine . Now she's had a consultation with immunologist who doesn't know what's going on but have her a follow up early next week . Thus is my question - can the change in hormones ( and weight ? She's already list 30+lbs) cause a low grade fever ? She even got her period back this week which she hasn't had for years . I'm worried : she says she's not but I really think she is . Any help would be greatly appreciated ??

Dehydration? What is her total fluid intake?

She claims to be drinking a lot but who knows how much truth is in anything she says. I'm a very concerned Mom In FL and she's a very millennial , independent , kinda knows everything girl in N-I. I am so stressed out about this .

If the Doctors aren't concerned as of yet, don't stress it for now.

A lot of little biological changes can occur that aren't necessarily problematic just surprising/annoying.

She should check her IV site for any painful lumps. I had one and ran a low grade fever off and on. I also have hard (ish) lump under my big scar where fluid has built up a bit. Either of those could cause a fever - they did in me. Dehydration is a big one. She needs 60oz a day of fluids minimum. At 6 weeks out that shouldn’t be hard to do.