got my period on jan. 7th(very normal), had sex once on jan. 11(last day of my period). got it again on jan. 31st very heavy and has been heavy(had to sleep with a heating pad on since tues), tired, nausea, occ. headaches, have a hemorroid( was hard-now soft and small). took 2 hpt, negative. i have no pregnancy symptoms. please help