Getting discouraged...

I cant stand seeing all the people I went to highschool with posting or talking about being pregnant... Its just not fair. People I know hate kids, did drugs, smoke, in bad relationships.... Sigh... I just want a baby so bad. My husband and I have been trying for a year and a half with no luck. I guess im wondering if anyone has advice. We try to have sex the day after AF and every other day until a few days after my fertil week is over. Anyone have luck with certain supplements or vitamins or just ways of doing things... Please help. We just want to start our family.