8dpo- anything?

8dpo today. Ovulation confirmed with bbt and ovulation tests.

Since 5 dpo i started having backaches. On 6 dpo and 7 dpo have kind of pinching sensation in my lower back. Today constant back pain...

I took a cheap test out of curiosity and kind of see a very faint line . Then took a frer and there i see a second faint line within the timw frame. It

is more visible in person and it has colour.

I am not sure if this is the start of something or it me who wants to see those lines.

What do you think?