Well, I'm not pregnant...

Hello fellow eve'rs. I was hopin I could ask for some opinions/advice. My period is 12 days late. On top of being late I'm bloated, gaining weight, experiencing lower back pain, tender breasts & abdomen as well as acne. I've taken two home pregnancy tests and both came up negative. I can't get into the doc anytime soon & google is just taking me in circles that continuously point out pregnancy as the result. I was wondering if anyone has experience something similar. I know stress and diet change can affect your period, but my stress levels not my eating habits have changed. (I should add that if I were pregnant, I'd be two months along. My last two periods were light, and off to say the least).