Oh no.

So my boyfriend & I had protected sex August 14th. Well we always use condoms okay, so after he cums he always changes the condom. He did this twice. We waited a little while and i gave him a bj. The third time the condom broke after about 5 minutes, afterni herd it snap i pulled away from him. We saw it had broke, he did NOT cum inside of it, i am just worried about precum, any advice for me?. (note im 15 my bf is 17)