I ve been in the er with severe cramping &sharpe pain, obgyn did say i had on left ovary fibroid tumor which are not cancerous, is fever a sign they ?

Fever not fibroid: Fibroid tumors should not cause you to have a fever. I'm not sure whether the diagnosis of fibroids is new or old, or the details of your symptoms. If this is the pain you had in the past and your doctor diagnosed you with fibroids, you should follow up with that doctor. If this is a different pain, you should be seen in the urgent care, ER, or with your doctor.

Fibroid tumors: Occur in the uterus, not the ovaries, and yes they aren't cancerous, yet can have complications as infection, which can cause fever, but usually rare. Most fibroids are asymptomatic, you mentioned the left ovary, there are other possibilities along that area where the ovary lies, the ovary itself can cause problems of its own. Follow the doctors advice and follow up with your gynecologist,goodluck