Do i test?

So i had an IUD for 9 years since my second child my daughter. My husband and i decided to try for a third we are still young...why not. I’ve had some issues over the last 9 years but i am confident i can get pregnant. I got my IUD out August 1st and i had a horrendous cycle last month. I get my cycle every 23 days and over he last two weeks i have had really bad cramps at random. I was due last Wednesday and i tested early on Monday...negative. Wednesday came and went no period. Friday i tested again..negative. Im now 6 days late (which I’m never late) tested negative 3 times. I currently have cramps but every time this happens i still don’t bleed. I don’t know what to do or what is going on with my body.