Test lines🤔

Thoughts on this one ladies? I've been looking at a lot of the ovulation tests and you can see 2 lines on all of them. Today should have been my ovulation day (I know it's only an estimate) but my breasts have been tender since Saturday (I have NEVER had sore boobs unless I have my period) so I took a test today just to see and my test line is barely visible I've been taking these tests for a while now and have always had 2 lines, one of course less visible but still 2. So only one line, sore boobs for 3 days and 2 weeks out from my period. Wth?