Update for you guys.

So I am 3 days late officially for my period. I have been having unprotected sex for about 4 months now with my soon to be husband. We do not use protection and we do not pull out. Last week I started cramping near my ovaries but never bled. This week I am so tired, dizzy, peeing every hour and cramping. I hVe not started my period yet. I took two pregnancy tests. One clear blue and one generic one. Both negative. I am continuing to have pinching pain within my uterus but no period. What could this be!? I’m so worried