confused

confused

hi...im a bit confused. i had a baby in 2007 an straight after i had the contraceptive injection. i decided not to have it topped up and it messed up my periods for about a year. at the end of last year they became regular again and i havent used any other contraceptive drugs. in march this year i had a positive prenancy test result but then i started bleeding and the doc said the pregnancy had been miscontinues. my periods have been quite irregular since. i didnt have one in aprim but had one at the end of may and i havent had another one since....any advice? xx