Breast milk to formula to breast milk

Hey ladies I'm just really curious about something so I was wondering when I had my little 5 months ago she was breast fed lots for about 5 weeks then I got a kidney infection and the antibiotics I was put on took away my milk so she been formula fed since but I just can't stop thinking of how much I want to breast feed her is it worth going back and trying to get my breast milk back and how would I come about that ?