Faint line 13 days post trigger shot - BFP?

Lua • Mom of a baby girl and 🤰🏻 Endo/Adeno + PCOS

I had an IUI this cycle and got a trigger shot 14 days ago. I did not test out the trigger shot.

Last night (12dpo and 13 days post trigger ) I got a faint line. This morning with FMU I got another faint line on clear blue early detection (13dpo 14 days post trigger).

Is this a true positive or only remaining of trigger shot since cb early detection is very sensitive?

Thank you