Need a little help.

Hi everyone I'm new to this app but I always see women posting things and I need some help. I got my period last month like I always do but this time it only lasted 2 days but then about a week and a half later I got it again and it was super heavy but only for 2 days again. Now I should have started my cycle 3 days ago but it still hasn't come. But I'm getting those feelings all throughout the days like its going to happen any second. I'm not on the pill or anything like that, my mom and have agreed that once I get into a relationship then I will go on the pill. Could anyone please help me?