TTC with Irregular Cycles

Heather
So my husband and I are officially trying to conceive! My cycles for the last 10 months or so have been irregular (partly due to changes in birth controls). My shortest cycle was about 15 days and my longest was 30 days. I'm off bc now and on day 30 of my cycle with no signs of my period. I took a pregnancy test 2 days ago and it was negative. I'm trying to hold off on getting too excited but how much later could my period be?!
Has anyone else been in a similar situation? How did it turn out for you?