I am going to be 20 years old, my boyfriend doesnt use condoms, and i am not on birth control. weve been together for almost 4 years and ive never been pregnant. i usually write down when i have my periods (last one i wrote down was valentines day) i cant remember if i had one in march and if i did, i am still late. ive taken 2 home pregnancy tests and both were negative. ive been having a weird feeling in my uterus/bladder, like something is moving in there. also my breasts are tender and sore to touch. can anyone help me please?