How do you cope with seeing other women get pregnant?

A girl I know just told me today that she is 6 weeks along with a man she has been dating for two months. My boyfriend and I tried for over a year and once I got pregnant I lost it.

I won't ever think any one woman is more deserving than the next but how do I cope with this when I tried so hard to get what I wanted, got it, then had it ripped away so quickly?

Don't get me wrong - I'm happy for her. Its just hard for me to see women who don't even try or don't even necessarily want children get pregnant while I'm sitting at home crying every night over losing my child February 28th of this year.

I just need closure. Some type.