Implantation bleeding?

El

So I was recently diagnosed with PCOS and put on medicine to help me conceive. I’ve been taking clomid and have only had the one month so far. I had to take Provera to have a bleed last month before I could start the Clomid. That bleed was the 16th-20th of last month. So I should be starting now. I have all the signs of AF but I’ve just been very lightly spotting and it’s like...a dark brown. It’s so light I don’t even have to use a pad or liner or anything. Could this be implantation bleeding?