Hey everyone im 18 years old and the situation im about to describe may sound dumb, but im very paranoid so here goes. In early november I was afraid I was pregnant because I was a week late...Thing is I never had sex although my boyfriend did finger me shortly before that. I started thinking well if he had sperm on himself then fingered me I culd be pregnant. Eventually I got my period so I ceased worrying. Today my boyfriend and I tried dry sex, he was wearing boxers and I was wearing very sheer underwear...He says he didn't cum but im afraid maybe he had some pre ejaculation that seeped through....However, I got my period this evening. My stomach appears larger, although that could be bloating, and I have cramps, but my period is not as heavy as normal. I am worried that I was right about being pregnant the first time and just had implantation bleeding, and also im worried that if I wasnt pregnant before I will be because of what I did today.
Is this possible?
Is it possible for me to have gotten pregnant today from the dry sex?
Can I take a home pregnancy test if I have my period?
I know it sounds crazy, but ive never had sex and am very paranoid about trying anythng new sexually for fear of becoming pregnant.

Thank you for listening