No AF?

Last month AF came on the day I was expecting it but it was a lot lighter than usual and ended up only lasting 2 days. I took a couple pregnancy tests a few days apart and they were both negative.

This month AF was due today and there are no signs whatsoever. Should I take another pregnancy test or just assume I’m not pregnant since I had a weird month last month also?

This is not normal for me and last month was the first and only time I can remember AF not coming/being that short. Ive never been pregnant before and don’t completely know what to expect or look for.