Ovulating and on my period

Just started successfully tracking my period in October and Last month I started ovulated on Cycle Day 17. This month is around Cycle Day 19 but I came on my period 6 days earlier than I thought I would. The first day I realized I was on my cycle I did my ovulation test and I was "high fertility" (Clearblue Ovulation Digital Test) and Im on Cycle Day 3 and all three days it has read High Fertility. Could I really be ovulating? Also, my cycle isnt spotting or light, its actually heavier than normal. Any ideas as to what is going on?