I’m scared

So on march 20 my boyfriend dip the tip (head) like two times and nothing else, he made sure that it was dry and everything but I’m kind of scared anyway. My last periods were on Dec 30, jan 30, and February 28, is it any way that I could be pregnant? My period hasn’t showed yet and it’s already the 30 of March, I have been super mega stressed about it, I know it was just two dips but I don’t know, any advices?

I had cramps like two days ago and I constantly feel like my period is going to come but it doesn’t :(