any info will help

Hey ladies!! 
So I've been experiencing sever cramping lately. Always on my left ovary; sometimes the area on my pelvic swells and is tender to the touch.....the cramping gets so bad that it keeps me (and hubby) up most nights. I also have no appitite and have lost 10 pounds in 3 weeks! That's 10 percent of my body weight folks😳..... Least I forgetthe nausea and fatigue that usually accompany these cramps. I'm at my wits end, I have no idea wtf is up with this lil'ol body. I visited my primary physician and blood work appeared as normal as a "fasting" person and am now awaiting ultrasound exam results.
Have any of you ladies experienced any similar symptoms? What was the prognosis? Diagnosis?