Help! My boobs are killing me

Hey gals! I need tips, advice, knowledge. I am 11 days late on my period, I have taken 8 pregnancy tests. (Yes 8) all negative but I am having continuous pre-period symptoms. Nauseous on and off, my hips and low back hurt, I cramp now I have insomnia yet I’m exhausted during the day but the worst is my boobs. They are so sore and sensitive. Just throbbing. I have very large breast double j. Yes like the letter after i so it’s a large area to be aching all day. What can I do to relive the pain and uncomfortable throbbing in my breasts? Any tips, tricks or ideas?