I do have pregnancy systems like headaches , nipples are darker and bigger , little cramping, etc.

I'm wondering if I may or may not be pregnant. Last period i had was in August 12 to August 16 now it's September 25 and no period yet I did have spotting only for a day witch has never ever happen to me so I'm worryed. I do have pregnancy systems like headaches , nipples are darker and bigger , little cramping , food doesn't taste the same , feeling bloated , peeing a lot , feeling like throwing up but don't throw up so please help out please