I am currently 5 weeks pregnant with my second. My almost 19 month old is still nurse. Just a little over a week ago before I new I was pregnant I offered to pump milk for a new mother who has a 6 week old and can't seem to get her milk supply up. Like the day I found out I was pregnant my 19 month old went a nursing spree and I can't seem to feed him enough yet alone pump anything. In a week of trying I have only been able to pump 8 oz when normal I could pump 8oz in one sitting. I am also very rarely away from my son who is stopping in for a snack which feel like every 10 minutes so I don't think I ever "fill up" enough to get a good pump going.
My first question is it is safe/smart/ a good idea to keep tring to pump for this other baby? While pregnant is it possible to build my milk supply at all or am I just giving away presious milk that my son could/should be having? Also is it a good idea to pump what I can and store it for my own child to have this winter to protect his immune system in case my supply goes down or drys up during this pregnancy?
I am struggling somewhat with guilt over telling this women could have my milk and now feeling like I need to hourd it away for my own child.
Any advice or tips anyone has is very welcome.