Could I be pregnant?

I was at my boyfriend house on May 4th. we tried having sex with a condom but I was a virgin so it kinda hurt and I asked him to stop. so he ended up not penetrating. And then we started fooling around and his penis rubbed my vagina like twice or so but didn’t penetrate. when I got home, I bleed a little and I just came to the conclusion that I’d probably lost my hymen. I was so scared maybe I’d have gotten pregnant somehow… I just wanted to be on the safe side. So I went out and bought Plan B. I took it within 48hours from the last time I was at my boyfriend’s house. And I took the 2nd tablet 18hours later(I miscalsulated the time, I know it was supposed to be 12hours.)

So, for the month of May, I got my period around the right time. It was supposed to come on the 23rd. But it came on the 19th. And lasted for the normal 5days. I’ve not been around my boyfriend or come sexually in contact with any guy since then. But its June now, and I’m a couple days late. I’ve not exactly had any pregnancy symptom like spitting or vomitting or morning sickness or tiredness. My stomach just hurts randomly like I’m getting a cramp but yet my period doesn’t come. I’ve been so scared and worried. I don’t know what to do.

Is there a possibility, I can get pregnant even when I didn’t exactly have sex, I took Plan B and I got my period in May?

And I’ve been stressing out lately over getting a job and all and I’ve not been eating right. Do you think my missed period is probably from stress or Plan B messed up my period? And do you think I’m pregnant?

Please, answer if you have an idea/answer. I’m so worried.