i was on the shot and i bled for 8 months, then went to pills and I wasn't bleeding for 2 months

i know this was along time ago but i was on the shot and i bled for 8 months straight then went to pills and I wasnt bleeding for the first two in a half months but at the end of the second month i started bleeding and ive been bleeding for 12 days now and i dont know what to do