symptoms🤔

For the past month or so I've been feeling off, I've had cramping on and off, I've had creamy cm for the past 3 weeks, I've had hot flashes, I've had insomnia, ive had lower back pain as well as some pelvic pain, I just recently feel very nauseous and almost like I have a cold, and I just looked in the mirror and I notice a lot of blue veins in my boobs going up to my chest and under my armpits, I have also noticed a line on my stomach that seems to be getting darker... I tested last week and it was negative but I've heard that it could take a while for hcg to become noticeable in your urine? Opinions please! I do plan on retesting as soon as I can get to the store