Feeling lost

I have always wanted children, and wanted to have them in my 20's, due to having an illness drs are telling me it's best to start trying as soon as possible and I really want to, more then anything, but financially I'm not in a place to support a baby, I feel completely lost, and upset all the time, I see others around me starting their families and it really hurts that I can't right now, I know it's the right thing to do, but I was just wondering if anyone else was experiencing the same at the moment?