Period or pregnant?!

Me and my bf have been ttc for a little while now my bc was supposed to be taken out last September but didn't till about 2 months ago I got my first period after 2 years on 6/12 and am supposed to start today. The past week or so my breast have been tender and my appetite has increased ( I eat all day) and I have had extrem cramps the past 3 days some so much I feel it in my pelvis. I don't know if I'm just hoping to be pregnant and it just my period or if I'm really pregnant? Please help me figure this out!