BBT Chart Normal?

April • One boy, and one girl. Thought we were done, but the universe had other plans! 💕

I posted this in another group, but decided I might actually get a response here...

Most charts I see fluctuate from day to day, mine seems to be gradually increasing. Is this normal? I check at 6am every morning before I get out of bed.

I have also been taking OPKs, which have all come back negative.

Is this normal?