Hi @arichards198317 and welcome to Mayo Clinic Connect. While I can't offer actual medical advice, I can tell you from personal experience that I have used NSAIDS VERY sparingly in my time since having the surgery in 2007. A high dose of prescribed ibuprofen sent me to the ER in 2010, but we later found out that I had gastric ulcers and the medication caused my ulcer to perforate. I went septic and it caused peritonitis.

According to some studies, there is not a lot to be said about reported cases though.
"Conclusion: NSAID use in our bariatric surgery population is high despite an institutional policy to prohibit their use across all bariatric patients. Despite the high incidence of NSAID use in our patient population, we could not identify a single case of an NSAID-induced gastrointestinal complication in our retrospective review. NSAID use after SG may be a safe and viable pain management strategy that needs further evaluation." --- The use of nonsteroidal anti-inflammatory drugs after sleeve gastrectomy: https://pubmed.ncbi.nlm.nih.gov/33353863/

Tylenol (acetaminophen) is normally better for keeping fevers at bay and may be easier on your stomach.
Have you discussed with your doctor at all?