Please tell me.

Amelia

Exclusively breastfeeding my almost 6 month old.

I've had regular periods since he was 8 weeks old, never been late for a period (unless I was pregnant) and I'm 4 days late. I've taken 3 tests, all clearly negative, and this shows up this morning with FMU and has me so confused. Later this morning I took another test and it was SO negative. PLEASE help me! What do you think? I've never had a 3 liner? 🙈🤷🏻‍♀️