My LO is 6 weeks and for the past week or so my letdown has gone from tingly to "OH F**K THAT HURTS." Is this normal? It seems to be coming out much faster as well, he is gulping it now and getting very windy as a result. Have tried infacol, gripe water, and just endless burping. Do I need to express/use nipple shields or is this going to chill out? Never knew BF would be so complicated.