Feeling hopeless

My husband and I have been TTC faithfully for the past few months I got my IUD removed in June and thought it would be fast I was wrong I'm 31 and DH is 39 this would be our first child together I have don't BBT and OPKs even did the Mucinex and NOTHING ? it feels like it's never gonna happen even making sure we BD all week well I'm fertile ahhhh!!!!