We tried for well over 3 years to have our first child. I know exactly what you mean, and how hard it is when you see what appear to be happy families everywhere. I particularly used to struggle with IKEA. It seems like that's where all the pregnant women hang out. I think I struggled the most with seeing pregnant women because I desperately wanted to have the bump, feel my baby move, get excited about having that baby.
When we first started trying for a baby, I just had this feeling that it wasn't going to be easy for us. I had no reason to think that, but it was just a feeling. I just felt like it was never going to happen, yet there were all these people falling pregnant just like that. My sister in law fell pregnant by accident. That was really hard. I had a friend who hadn't even met her now husband when we started trying, have a baby. I had a friend who would complain about how much she hated being pregnant.
I think I just kind of got over it in the end. I had other things in my life that were great, but I just constantly had it in the back of my head how much I wanted a child.
After 4 long years of trying to conceive, our first child was born. And then six months after having him, I fell pregnant with my second son. I'm never apart from my children and I love them so much, but there are times when I could just do with a small break. They are 5 and 6 now, and I haven't had a single night away from them. We used to go abroad about 3 or 4 times a year pre-children. We've only done that once since they've been born, as money is a bit tighter now. So there's a lot we don't do now that we have children.
But me and my husband set a time. We'd said if I hadn't fallen pregnant by the time I was 32, and we'd given this a good shot of trying, we'd think about adoption. Obviously, we didn't end up going down that road, but it gave me something, and to give a child who has had a really rough start in life the chance of a loving home definitely kept me going.
I don't know what your issues are for why you haven't fallen pregnant, but don't give up hope. I really, really thought it was never going to happen for us and it did (twice!).