Ok I'm going crazy

Ok so for the last three days my boobs have been incredibly sore and painful, decided the test this morning, I got a vvvvfl and then I decided to test with a pink this afternoon and it's negative, but when I wiped I got a stripe of pink, but my af is supposed to be here tomorrow. I'm 13dpo is it possible to still get implantation bleeding? I'm nervous and crossing my fingers af doesn't come!