Trying to concieve.... missing period for months

Carolyn

My last period was on the 6th of December. I am currently 89 days late for my period. I have tested again and again and they're all negative :'( my and my fiance are getting married in June and we want to start our little family... but my period has disappeared without a trace. Any ideas? I tested again today and negative, calling an obgyn soon to get checked out...