Negative Tests, but…

So. I’m probably just being crazy and eating too much with stress of going back to work, however I feel pregnant…. I’ve taken a dozen tests last month all negative. Took 2 tests this month negative. We aren’t trying per say, but there was a day one day past ovulation day that could have been it.

I’m 9 month postpartum, nursing, gone back to work, have two older kiddos…

Baby born end of Aug, period started back up in Oct. 2-4 weeks apart. April hits and was 21 days past expected period and was heavy for a solid day and then just stopped. No petering start or ending to it. Now this month (May) I’m currently 7 days past expected period.

I asked last month to have a confirmation of pregnancy appointment, but since I had a period they had me cancel it.

Thoughts? What would you do?