Hey I'm a second time Mom but I just got a breast pump and desanitzes and assembled today. I'm only 15w5d but I decided to test out the different suction and speeds on my breast. But I've heard that its bad to stimulate the nipples in anyway since it can cause early labor? I just don't know if that's for women way further along but my hormones keep getting to me freaking me out of miscarrying or something for testing my breast pump :/