Faint line on first response!

Sooo last month I had a faint line on my first response. It ended up going away and I started my period. This month I am getting a faint line again! (See pictures) It was very noticeable at the 3mm but once it dried it was super hard to see...someone help?! Has this happened to you?

Top is test from this morning bottom was from last night.(no line on bottom one)