I leaked a lot with my first/second pregnancies at 3months but not at all with this one-im 24weeks. Is that normal? *leaked colustrum

Breast leakage. Yes, this is normal. After a couple of prior pregnancies your body gets more efficient at managing all the changes that go on in pregnancy. Thus, you usually have less discomfort, labor is shorter, you are less likely to tear at birth, and your breasts become more efficient at lactation, which includes the early production of "pre-milk" (colostrum). If it is there, it is normal to leak.