I would recommend Spectra S1 for a breast pump for its suction, timer function and quietness but It’s bulky so it may not be good to bring around.
Milk supply may not kick in immediately after birth. It may take 1 to 7 days. What will come first is colostrum, which is important for your baby’s immune system. Letting your baby latch or have a lot of skin to skin contact will help your milk come fast. Try to read up and attend classes on breastfeeding. Some popular ones are by Dr Wong Boh Boi. There are a lot of resources out there! All the best :)
Risha Adnan