My mice just had babies. How should I proceed?

I'm a first time owner and the decision to get the mice was spontaneous. I love animals and I could take care of them as the previous owners couldn't. I took them in and kept them together for the 2 weeks I had them. I didn't know their genders and haven't done my research properly, (I took advice from the nearby pet pharmacy) and it turned out that they are male and female. Well I just came home from work and saw they had their babies. I separated them and kept the mother with the babies and the dad is in a different place.

What should I do now? Do they need special care or anything I could get? I will be contacting and going to the pharma/vet tomorrow first thing in the morning. It's already midnight for me and I can't reach anyone that would be of significant assistance. Thanks in advance!