Not breastfeeding and regretting it!

I wasn't sure if I wanted to breastfeed and decided to formula feed. I told myself I'd try it to see if it worked but really wasn't educated on it or what to do. After I gave birth I had no help and the lactation consultant never came to my room so formula feeding it was. After I got home I tried a few times but baby just wouldn't latch. My LO is 3 wks old now and I'm sure my milk is about dried up it leaks a bit but not much. I just feel bad.