breast milk...

Baby hasn't latched on so I've been pumping and then bottle feeding. Well boyfriend (babies father) had to leave for 2 days and I was alone. It was very tiring all by myself, so in those 2 days I did not pump and just gave her formula. He came back today so when he was watching her, I tried pumping and nothing but a couple drops came out. Did it for 15 minutes And still only couple drops. So an hour later I try again, & nothing but few drops. Then 2 hours later I again try, & same thing, only few drops. What do I do?? Will my milk come back or did it dry up within the 2 days I didn't pump?? I feel so dumb I should have just pumped no matter how tired I was. 😟