Pregnancy faint lines

Hi everyone. I’ve been taking home pregnancy test since last week Wednesday and the lines are faint. Today is now the 6th day and it’s still very faint especially compared to Saturday’s test. (Btw-when I checked this Saturday the line was not that dark.) today makes exactly 30 days since my last period. My period comes every 28,29,30,31,32 days never consistent. I also suffer from hypothyroidism and we had a miss a carriage 2 years ago and have been tycoon since.

What do you think?