Can I Get Pregnant With No Actual Contact Of The Genitals? Can Precum Act Up?

My Bf took out his penis and holded it n asked for a blowjob i sucked on it a little bit then he put it away after by zipping up his trousers and everything; after that he fingered me knowing we had clothes on Could i be pregnant? Could there be precum on his penis that went to his hands He went inside my shorts to finger me would the precum would of wiped off? I asked him if he cummed and he said no he didnt even get a bonar Im worried as my period came on time but was really light and i had cramps for a whole week mostly So would i be pregnant? or isit jus me stressing making my period light Please help me:) Thanks love