Implantation?? 8 days past trigger, ~6DPO

I did my first round of letrozole this month. I did a trigger shot 8 days ago, likely ovulated a day and a half after that. So I’m 6-7 DPO. I woke up w sore boobs and felt more discharge so I checked when I wiped and saw this. I’m really really hoping it’s not my period coming early :( thoughts??

Was anyone’s implantation spotting like this? ***i know it’s rare but it DOES happen***

I am also posting my trigger shot progression below.