Implantation bleeding

I can no longer feel confident about if I’m seeing early periods or implantation bleeding. I’m four days out from my expected period and I’ve got… something. It’s light pink and slick and I saw something in the bowl and I just can’t tell anymore. I’m so goddamn tired of this. This is my last IUI before I do another IVF round and then if nothing takes from that I’m done. It’s been over 3 years which is nothing compared to some, but yeah. I’ve had a grand total of 2 positives one was a MC and one was a chemical. Anyway. I’m not really sure what I’m posting for except to just say it. (Also posted on a TTC Reddit just incase someone sees it there too)