Possibly pregnant?

So, this may be stupid, but I’m curious and kind of scared.

the other day me and my boyfriend were messing with each other and I jerked him off, then he proceeded to do the same for me. Then we all got cleaned up and I’m not sure if he cleaned well, because I didn’t want to be a creep and well, watch him.

So, later we were snuggling and he got hard again, and I began to dry hump him. Then, I wanted to tease him so I took off my leggings and underwear and placed his tip against my vag. However I never inserted it, because I would like to stay somewhat of a virgin.

A few days later, I believe on Wednesday I got a small amount of bleeding at night, I put on a pad and went to sleep. (I thought it was my period) I woke up the next morning to find that there wasn’t much period blood, and it was brown like the last day of my cycle. I threw it out and placed on a new one, and when I went to change it the next time there was nothing there. I was concerned so I took to the internet and it said that it may be implantation bleeding. I almost had a heart attack— I read more and i wasn’t sure if I could get pregnant without you know, actually putting it in.

Can someone please help me with this? I’ve been panicking for a few days now-