Is this normal ?

Natalie • Lost our baby 1/22/18 👼🏼😭 Rainbow babygirl 12/14/20💜🥰 Babygirl 12/1/21 Trying for our rainbow #3 🤞🏼🥺 after mmc

I got my peak Wednesday at 6pm, and I just took a OPK stick Thursday (since I used the advanced) and it was positive and Friday I got a negative results so I think I ovulated on cd 14 but not sure. What is the dip below the cover line glow has for me