Hey mama! Normal lang yan, maraming pregnant friends ko na ang nagsabi na palaging sore ang breasts especially sa first and second trimester, hormones ang reason kaya ganyan, pero since you're 20 weeks na, mas better mag-check with your OB just to be sure everything's okay at walang ibang reason. Comfortable bra lang ginagamit ng isa sa circle ko, yung hindi tight, at tumutulong din daw yun! Pero talagang worth asking sa doctor mo para peace of mind mo lang.