breast milk

I went back to work so i had stopped breastfeeding my baby when he was only a month , now he will be 5 months and i quit my job dec 20 to be with him since he been hospitalized with  rsv and bronchulitus and he was on daycare which inwas afraid to do cause i didnt start my first son until he was 2 years old . Now that im home i been wanting to breastfeed again but nothing . I eat whatever i can or pump and i get nothing unless i squeeze my own breast and get atleast 2 drops :( i really want to try again ! Does it mean that im all dried up ?? Anything i can buy over the counter to help produce milk? Please any suggestions !