Ttc for a year!

So my husband and I decided to try to get pregnant a year ago. I got off bc and didn't really track my ovulation thinking it would just happen. Then after a few months I started doing more research and figuring out ovulation cycles. The hubby is constantly out of town for weeks and he only seems to get home at the end of my window. I'm feeling do discouraged and so ready to give up. I get super upset at seeing any prego announcements or even seeing a prego girl. When is it time just to give up and accept the fact we won't have a baby?