Too early for implantation bleeding?

[Busterkitten]

Hi all

It’s been a while since I’ve been here and I’m just looking for a wee bit of advice. I had ivf at the start of this year and mc at 12 weeks. I was then told I can’t use my last embryo until I lose weight and I only have until my next birthday, which is in the spring. So although I have pcos I’ve been tracking my ovulation as the weight is not shifting. Couldn’t believe it when I got a positive ovulation test last week. I’m now 6dpo and have had a little bit of spotting - is it too early to be implantation bleeding? It started yesterday and is still there today, although it is very light. I don’t want to get my hopes up, and have read online that it is likely too early to be that anyway but I was just wondering if anyone has had an implantation bleed this early on?