Still not pregnant?!?!

Cecilia

My SO and I have been trying to get pregnant for 4 months now and I have yet to get pregnant. I have been doing the fertility tracking and we had sex 12+ times this cycle and still nada. I'm only 27 so it can't be that my eggs are too old and I have had a child before (she will be 6 in October). I need some advice from long time TTCers.