Help please

Im in a bit of a dilemma, my cycle was due on the 4/2 but was having pg symptoms (sore breasts on outer sides, feeling sick an tired constantly going to the toilet) test was neg then af showed up on 6/2 - 10/2 started really heavy then went to nothin at all an today ive been to the toilet twice an lost a very small clot an when i wipe it a show of brown any ideas ? Any comments welcome