“Birth Control Problems ”

I’m a 18 year old biological woman and I’ve been on the birth control pill since I was 14 for irregular periods, but I’ve been taking it everyday when I wake up instead of at the same time. I became sexually active a few months ago and I decided to get on a better form of birth control. I started my period last Sunday and got my first depo shot Tuesday. I had homecoming last night(Saturday) and my boyfriend came in me. Should I get plan B? That would be a whole mess with me having to ask my parents for money and everything.