WHAT DOES THIS MEAN?!

Hey ladies, a few months ago I was a few days late but no positive. I figured I would wait a week to retest. I felt different than typically during AF (bloated, slightly queasy, moody, etc) and maybe 7 days late I had an episode where I believe it was a miscarriage (I won't go into graphic details). fast forward a few months and I am now 4 days late and experiencing the same symptoms with no positive result. I have sticky white discharge, no AF, slightly queasy, tender breasts, and super tired. I tend to have fairly regular AF +/- 1 day. I am so scared it will result in a miscarraige again, but my doctor says they don't typically start to diagnose potential problems till my 2nd or 3rd miscarriage. Am I pregnant?