pregnancy symptoms?¿

So I have a lot of questions. Warning: may be TMI!
So I have a ton of veins all over my breasts and nipples and they're very dark and there's a lot. My nipples are very puffy and my boobs are super sore. My cervix is high soft and closed and I'm supposed to start my period tomorrow. I've tested twice: Thursday afternoon and yesterday morning. Both were negative. Are these symptoms of pregnancy or what?¿