Not sure, maybe delusional but ADVICE PLS?

hello girls, so long story short, I had sex with my bf one week ago, unprotected because we are idiots, and he came on my stomach/tummy. In that time, I covered my..down part with my hand but some of his sperm (a little) came on it (on my hand).

Of course I cleaned and washed myself after this. Though, the next day I took a Plan B just for sure, but I was ovulating.

So, after 2-3 days,my breasts went crazy and now they are tender and sensible, also big (like pms). My cycle should start in 9 days.

Should I be worried or not?