spotting day after unprotected sex

Lissette
So yesterday night I had unprotected sex with my hubby and today In the morning I started spotting this has never happened to me .
It started out as light pink spotting then it got a little darker like more reddish in color I haven't had to wear a pad because it's only visible when I wipe I don't get my period until the 11/21 which is like two weeks away . Symptoms : my boobs are a little swollen and sore on the sides and minor cramps which I don't really get while I'm on my period . Also bloated 
Has this happened to you???

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