My sister is in medical school and is so adamant that heart rates have nothing to do with gender at this point (18 weeks) and I do believe her. But it’s still fun so I’m wondering, those of you who know what you’re having, what are your babies current heart rates? I have a gender ultrasound next week but I am going nuts waiting. We have 4 boys already and are obviously quite interested to see who is on the way :) I have a home fetal Doppler and have clocked everything from 145 to 165. What in the world.