Freaking out here

So my boyfriend and I were messing around for a bit and he had a lot of Pre cum that was on me, we then put a condom on but he didn’t take his underwear off all the way. So the outside of the condom was touching the precum.

I’m freaking out that I might get pregnant. My period says it should be here in nine days. This happened two days ago. My boobs are getting sore, but they are also like this before my period. What should I do? When is the soonest you can take a test and it be accurate