Period came 10 days early but brown next month I had a regular period. then same next month. im a pregnant???

I had protected (used a condomn it didn't break i checked)feb 5.. feb 8 got period but light brown. then March period came on the 8th. It was normal started out brown then red.but had cramps(which i never had before) March 31 I had my period It was normal started out red then brown.. im I pregnant??? i am experienceing sore (April 14th but I had 3 months ago) and i've be burping alot no acid taste just air (April 4th) ive been having mule movements around mi pelvic area ( April 15th)..ive been very stressed out i havent been felling fatigue, havent gained any weight (check everyday) no belly, no enlargement, no back pain. im just very stressed out.... please tell me if im pregnant