Jealousy

So I'm 25 and my husband is 27. We have been married for over a year and a half. Together 10 years. We have been TTC for a year now and nothing. We have been tested in every way, shape, and form and we are both fine. So I currently have a friend who is 22 years old and 19w pregnant. My SIL is 21 and 9w pregnant and doesn't have a job and still lives with her parents. And today I just found out that a wife of my husbands friend (me and the wife are friends but not super close) is 2 weeks pregnant and she just turned 20. Is it bad that after I found out that each was pregnant I cried? Me and my husband are very much financially stable and we live a very good life. Neither of us have ever done drugs. We don't drink a lot. We are both very physically fit and yet are not getting pregnant. I am at the point were I am so jealous and depressed and honestly feel like we are more fit to be parents.