Is my ovulation bleeding too heavy?

18F here. Since I was 15 I have experienced ovulation bleeding, some months it is minimal. However, some months, like this month, is it heavy - like another period. Typically I will bleed for a day, then stop for a day, then bleed for another day or two. I would also like to add, that this bleeding warrants me having to wear a sanitary towel & has soaked my underwear before. This bleeding does not always occur at the same time during my cycle either. Sometimes it is a week after my period, sometimes it is only a week before my period. Like I say however, it is not always heavy. I may also add that I believe that I have mild IBS & suffer from frequent feelings of nausea. Is this a cause for concern or am I just over-worrying?