starting to lose hope.

We have been trying for baby number two since July. Month after month I think it's my month and nothing. My cycles are really irregular which makes it super hard but we literally had sex every other day this cycle and took a pregnancy test this morning and nothing! My cycles can be 32 days long like last cycle or 42 days long like the cycle before that. So I was due for my period yesterday if it was 32. Anyways, I'm just feeling so defeated and so discouraged. I just want to make my daughter a big sister!