Could I be pregnant?

I'm on birth control pills and have never had anything with anyone, but a week ago my boyfriend accidentally touched my thigh through his pants while hugging me.

A month ago, he put his hand on my stomach, and right after that, I took a break to induce a withdrawal bleeding because my ocd said so. A week later, the pack ended, and I had another withdrawal bleeding.

I've actually had my period twice already, but after the incident with the thigh touch, I haven't had my period, even though the pack is finished (all four placebo pills, too). Now I can't calm down, and my brain is coming up with scenarios about how I could have theoretically gotten pregnant, and I feel guilty.

Essentially, I was too irresponsible because I allowed him to accidentally touch my leg and didn't keep an eye on it. I feel incredibly guilty for my irresponsibility and don't know what to do, because after only a week, the test won't show anything.

I understand that this is biologically impossible, but now I'm literally afraid to even hug, and it is precisely because of the fear of getting pregnant that I have never done anything else except this.

Could this be pregnancy and what can be done to stop the withdrawal bleeding if for some reason it doesn't start?

I recently started new antipsychotics that increase prolactin, but I'm just so scared that I don't know how to make sure I'm not pregnant or, on the contrary, that I'm pregnant so I can have an abortion