Help Please!

So at 11 DPO got a positive hpt and today did a digital it said Negative and my pee sticks also were super faint now! I’m 14 DPO I’m freaking out! Has anyone had this happen before and still stayed pregnant? My urine is super light by the way and I did use FMU. Also I’ve been drinking a lot of water since I’ve been super dehydrated or at least feeling that way! I made a doctors appointment for blood work but just super scared it’s a chemical. Oh and AF isn’t late yet I should’ve got it on April 8th so I tested positive pretty early on🤷🏻‍♀️😭 so confused.

Today’s test FMU

!

The 11 DPO was FMU and the 12 DPO was the afternoon urine!