Cud I be Pregnant ?

Me and my guy were fooling around about 2 months back and rubbing our genitals against each other, not sure whether he had cum or pre cum on his penis when we were doing all this.
He did try to insert his penis into my vagina on two ocassions which ofcourse I did not allow.
I am a virgin and 25.

In about these two months I have had two normal monthly periods on expected due dates respectively.

Do you guys think that I could be pregnant by any chance ?

I might have swallowed his semen also while giving him a blowjob

I am living in this constant fear of getting pregnant so much so that I have lost all my sleep and appetite, please please please guide me.
Thankyou.