In March this year I had an dermoid cyst surgery. The cyst was inflamed so I had constant fever up to 37.5 C (axilliary). After the surgery until now I’m having fever up to 37.5 C  but only at night, every night. Doctors said that the cyst is fully taken out. I’m looking for some other posible health problems. I had blood test  just recently and everything was ok exept for my MPV fl which is 5,5 and that's lower than normal. Please advise me what to check. And should i worry about the MPV fl.thanks in advance.

Summarized question: What causes low MPV?