Early period or ovulation bleeding

April • Been married for 17 years ttc for 15, we have adopted two boys so this is my first pregnancy after 2 miscarriages and weight loss surgery 7 months ago.
Ok ladies I'm in a dilemma I took an ovulation test Sunday and it came out positive so hubby and I have been bding, well this morning I wake up go to the bathroom and I have red blood when I wipe, this doesn't seem normal to me since I have 12 days left til my next period and I'm only on cd 21. I have been diagnosed with pcos and I'm on clomid and metformin, the blood just seems a little heavy for ovulation bleeding it does get lighter and turn brown, am I being a worry wart or does it sound normal to anyone!? Please help I am unsure of what to do!