Hey. I'm 18 Years Old And I Have Recently Spent

Hey. I'm 18 years old and I have recently spent some time with my boyfriend. I'm having these symptoms, which is abdominal pain, chest pain, constant burping and a burning sensation in my chest and stomach. We haven't had any kind of intercourse, he just rubbed his penis on my vagina, completely naked and maybe fingered a little too deep. He believes that he didn't cum inside me and when he did, I was at the side and says he's sure that no sperm has touched me anywhere. But, I'm a little doubtful as all of these symptoms are of early pregnancy. I've had my periods on 10th May and they finished on 15th May, we had this time on 20th and 21st May, which was my fertility period. The thing that has got me worried is that I might end up being pregnant. That is the reason for which I tried taking two aspirin in coke to induce a miscarriage. I'm in no position to go to gynaecologist or tell my parents and I'd honestly appreciate any kind of help, asap.
Thank you.