Regret not asking for help sooner..

Okay so my little man is going to be 4 weeks tomorrow. When we were at the hospital I got nervous and didn't ask for help from a lactaction consultant.

Now, 4 weeks later I stopped pumping because I got so discouraged and found out Medela doesn't make me size flange that I would need so when I did pump it hurt a lot and I lost some.

Is it possible for me to start over again? I feel like I've failed my baby and my family. Formula is so expensive. I don't know what to do!

Advise needed