I'm going to be gone from DD for about 6 hours, I EBF and she is 4.5 months old. Should I bring the hand pump that came with my pump? It will be in the evening when I usually cluster feed her so I'm sure I will feel it if I don't do anything. How do I use the pump? I'll be at a bar/function room, is it going to be super weird to do this in a bathroom stall?