BFP turns into a BFN? 🤷🏻‍♀️

Sorry i’m posting on here ladies, I just feel like I really need some help!

I’m not too sure what to think or how to feel right now.

I used cheap ebay hpts for my last two pregnancies (miscarriage and 15 month old) so I’ve trusted them to be pretty accurate until today.

I used the same urine for three tests and one came out positive and the other two negative?

I am feeling a bit deflated, I have felt a bit off and my nipples whilst breastfeeding have been hurting a lot which has never happened before..