Help plesss

Okay soo I got my period the 9th and on the day before I gave my bf an handjob and he didint cum( no sperm), didint touch my vagina till like a couple of hours later when I had to go to the washroom.lol kinda stupid question but one of my friends told me I could be pregnant from this and she’s the experiences one so I don’t know what to believe 🤷🏽‍♀️. Pls help me prove her wrong that there’s no way this is possible. Pregnant? Also got like stomachaches