Help please

Miranda • Mom🐱🐱👦🏼/wife👪🤱🤰baby number two on the way

Okay... I need some help. I started taking opk test June 30th because I haven’t had my first postpartum period yet (15months postpartum) and my husband and I are trying for our second. The first few days the test was low then I got a positive test July 3rd. Isn’t the lh supposed to drop down ? I tested till the 6th and it did lower. I started retesting yesterday (I wasn’t home for a few days) and the test had seemed to be at the same level as before (the 6th) now my levels are going up again. Can someone explain please? I am also using bbt, again missed the same day I was gone. I’ll post photos.

Ps. After the first few days I am now testing at 11 am to keep it consistent