Drop in Supply After Being Sick

I was recently sick with a stomach bug and was barely able to keep anything in me, including liquids, for about 4 days. I kept breast feeding my 7.5 month old the entire time but I've noticed a drop in my supply. I'm on day 2 of eating and drinking normally and I've still noticed that I'm not as "full" as I was before I was sick. anyone have any experience with this, just wondering if I need to give it some more time or if there's anything I can do to help get my supply back up ! I'm a working mom so I need to pump while I'm away from my baby but I've been exclusively nursing and only pumping while I'm away since she's been born so I really really want to be able to keep it up. Thanks !