Implantation bleeding or not????

Hello Ladies,

Im 36 with PCOS and I've been ttc on and off for about 2 years now. I was wondering if you ladies could tell me what you think and share your experiences with implantation bleeding.

Weirdest thing. So I ovulated on the 23rd of September. Hubby and I had sex every day from the 22nd to the 25th.

On the 29th I noticed brown discharge. I thought it was spotting but it got heavier to the point where it looked like AF, though it wasn't quite enough to fill a tampon. I've never had an early AF visit in my entire life! Then on the 30th, it stopped all together. My regular cycle lasts 3 to 5 days.

I read up on implantation bleeding and it seems like that might have been the case but then, its only been 6 or so days since I ovulated and I also know this happens to about 30% of women who conceive but I just can't accept it was AF. It was just too soon after ovulation.

What do you all think, implantation bleeding or not? Your input would really help calm my nerves!