What do you do when you feel like giving up?

Presley
AF came today.  37 years old.  TTC for 3 yrs.  What can I do?  I cannot afford in vitro and all that stuff.  Not sure about my husbands sperm count.  I just wanted to be one of those couples that had unwavering faith and it happened.  I guess if I'm typing this I am wavering.  Ladies, please help me.  I feel like I'm going to fall apart.