My boyfriend rubbed his Penis on my vagina . We both were wearing underwears and cotton shorts. I missed my period last month and this month also iam not having periods. i have abdominal cramps since one month. Am i pregnant ?

I am just 19 . I and my boyfriend had hard sex for 45 mintues ..He rubbed his penis on my vagina, sucked my nipples , touched my vagina , kissed me all over my body. He was wearing underwear and cotton pants and i was wearing panties and cotton shorts . My underwear was wet after all this and his too. I missed my period last month ( only 1st day i had bleeding) and this time also i skipped 2 days period . I have abdominal cramps also since 1 month. Am i pregnant. Please reply i am so worried .