what is going on !

Currently sitting at 3 days late with 2 negative test results. I have experienced little cramping with very heavy full/soar blue vained breasts ! My normal af symptoms are somthing like very crampying very emotional and head aches never soar breasts. After doing a little research apparently it's not that uncommon for a test to read negative if your levels are low but still It is all so frustrating just sitting here waiting. TCC after our last miscarriage has been devisating. I'm worried that if I am pregnant then maybe I will miscarriage Because my levels are not high enough. I would like to point out that my last cycles go as followed 22,24,27,25,25 I am currently on day 29. I bought a pack of three tests should I wait it out ? What if af comes ? This is all so painful I never knew trying to have a baby could feel so hopeless 😩