So, I have very irregular periods. I am 18. I get my period only about three times a year. In January, I got my period, and a few weeks later, I had sex with my boyfriend. I experienced pregnancy symptoms, so I took a test, and it said it was negative. So I left it as that.. That was the only time I had sex, but recently, I started to have brown spotting and clotting everytime I wiped after I peed. it was never a lot, and sometimes it would only be faint pink spots. it only happened for about four days and it stopped. I haven't gotten my period either, and I had never spotted before i got it.. it usually just comes without warning. my aroelas are turning darker, and i am starting to see more veins... Also, It has become very uncomfortable to sleep, I get full very fast when I eat, I have headaches, i get dizzy, i am very gassy, and everytime I eat, I go to the restroom right away.. could i still be pregnant even though the test said it was negative and I only get about three periods a year?