How come my period isn't flowing right?

Me

There no blood on my pad but there is when I wipe, but light blood no spotting. I just did a pregnancy test before Christmas at my medical doctor so i know I'm not pregnant.

I don't know what my periods are becoming but I did showed my obgyn doctor my list of periods i had written down on paper which some were missee periods but anyway he said my ovulation was a bit off that I may have trouble conceiving which I'm not trying to conceive right now.

I may have to make obgyn doctor soon but was wondering if any of you had this problem beforr and if so what did you do about it?