My chart not sure that looks okay !?

Victoria

I def know i ovulate cd15 or cd16 as I use clear blue digital advanced at got my peak cd15. I m 5dpo but I m not sure my chart looks okay???not sure why dropped the cover line and now it looks like it went up a bit this morning . Taking temp every morning 5am as I m wake up with my hubby same time every morning . Any advice from ladies with much more experience as it s my first month taking temp .