How long are you pumping for and how often in they two days? I can get about 10ml/day but I only pump for an hour and it’s a hand pump I’m using 🩷
Collecting colostrum can cause braxton hicks and can help induce labour which is why they say not to start until 36/37 weeks, not saying you’re going into labour as probably just braxton hicks. Some peoples breasts produces more milk then others as well everyone’s milk production is different
It's not a sign of labour, I was the same with my daughter. If it's causing tightening, you might want to ease off, though.