My period is late I was supposed to start feb. 28th...

jessica
I'm worried I'm pregnant because I was supposed to start my period like the beginning of March or the last day of the last month February and it's been a while since my last period I really need some advice here I left my fiance cause he kept using me for money but today I'm having tiny cramps but it doesn't make sense and I've been worried should I take a pregnancy test? I need to know soon cause I keep waiting and it's scaring me cause I don't want to get back with him just because of a baby.....please help me!......