am I out? should I ask for a blood test?

Michelle
Aunt flow was due two days ago. I tested day after my missed period and it was negative. I have been having on and off pelvic cramps for a week now. Today I woke up and I immediately noticed my breasts. My veins are showing and they're huge. My veins normally don't show and my areolas seem bigger. What do u all think? If I don't start I am suppose to start process but now I'm hesitant