Boobs are weighting me down

bnm

I'm only 21 weeks and my boobs are so heavy and sore! I am FILLED with milk (colostrum). Recently, my SO has been "milking" me to relive pressure. Im thinking about buying a pump soon to help the pressure build up. Is this a good idea? Anyone else have this problem?

I can't even sleep comfortably because I get woken up from how swollen they get and they're super heavy.

Obviously I don't have my child yet, and this is my first so I don't know how to go about it