4dt5dt and 6dp5dt

Hi all.

I had my transfer 1/8 and I tested in the evening on 4dp5dt and it was positive (yay!). I tested again the next morning, 10 hours later and the line looked the same. I didn’t panic as it was a short timeframe. Then I tested again the evening of 6dp5dt and the line hasn’t changed. I am so worried about a chemical. This was my first FET with my only PGS normal embryo.

What do you ladies think? The pic is tests from 48 hours apart. They are dry now.