Advice?

Southern

I’m 23 years old and have a regular 33 day cycle this month I should have gotten my visit on the 15th ovulation on the 31st. No sign of af nor do I have any of my usual symptoms. I had light spotting on the 8th for 1hour max. I’ve taken two pregnancy test one on the 15th another on the 18th. Both BFN but something in me is telling me I’m pregnant. Yet my tests are negative I haven’t stressed to bad about it because if my tests are negative I know I’m most likely not pregnant. But I really want to take one more test just to be sure though.

This is the pt I used and the lines ran on one the other the control line was barely visible. So any recommendations on a good brand? What are your favorite tests?