BFP starting or lingering trigger?

Today is 11 days past my trigger shot (Ovidrel), which I know can give you false positives if you test too early. I decided not to test out the shot this round. I did get curious, so I used dollar store cheapies 9 & 10 DPT and they were totally negative. I caved and used a FRER this morning with my 2MU. There’s definitely a faint line there. I know it’s way more sensitive than dollar store cheapies, but what do you think...could it be the start of my BFP, or is it probably still just the trigger hanging out?