I am 52, so to me 37 is young.
I married a 36 and had my first child a 39. We adopted when I was 48.
"some of the girls I went to school with have children who left school this summer." It doesn't matter what other women have done, do you want to be in the position of having kids leaving school now? Or do you mean you want kids now?
Decide what it is you want and go for it. I had to join a dating agency to meet the man of my dreams. I had to have fertility treatment to have one child, and go through the adoption process for number 2. I think you just need to decide what it is you want and really go for it.
Read up on positive thinking, I am a firm believer in finding a positive through and moving with it. Expectations drive results. If you expect good things and search for them you might find they come. It is not an exact science.
You do need to change how you think and work out how to make the best of life. It really does work. It doesn't mean you will necessarily meet the partner of your dreams of have a family but it does mean (I think) you are more likely to.
This piece is very gung-ho but I do think there is something in it.
I used to dislike my job but it was right for me, fitted with other commitments, people nice etc. I changed my attitude and now I love work. It may not happen overnight but it can! Good luck.
highexistence.com/power-of-positive-thinking/