Don't know if I'm about to ovulate or get my period

I had a natural miscarriage on July 12th I had bleeding for 2 days and that was it. My boyfriend and We have been trying again since July 14th. Seriously we've been having sex almost everyday. Anyway, I'm having some cramping today like my period is coming and yesterday and today I've been really hungry. I think I remember these with my last ovulation but I did have to go on clomid to ovulate. Not to say I can't ovulate by myself ( I did get pregnant twice on my own) plus I've had a bad headache yesterday and today. I plan on taking an ovulation test later today. Does it sound like ovulation or my period? Thanks