Am i pregnant or is it more serious!?!? TTC

Ok so me and my husband were just married last month and needless to say we've been acting as newlyweds do (lots of sex) lol.

But we were trying to be careful of when we actually were doing anything because we weren't planning on getting pregnant so soon. Anyway I had a full cycle last month and have period tracker and glow on my phone so me missing a period has never happened. This month I was due to start 3 days ago but nothing... I have extremely painful periods so when I started cramping real bad I didn't even check myself. I knew exactly what it was. Imagine my surprise now that I am STILL not on my cycle. Not one drop of blood... But I am having all of the symptoms of my menstrual cycle including bad cramps. Does anyone know what it could be.... I really need help.