Before we had protected sex/ before he put the condom on he rubbed his penis around my vagina. Have I a chance of becoming pregnant?

I am 19 years old and recently I have been told by someone I work with that I'd need to lose weight and now every time I look in the mirror I just see a fat belly and no curves. I am around 5'5 or 5'6 and I weigh 115lb or 11.071 stone and my bmi tells me I am overweight for my height. I have sat cry...