So I drew a hot bath for my wife to help her relax at about 5 weeks. We didn’t know at the time that heat stress at 3-7 weeks can cause neural tube defects. We’re 8-9 weeks now and everything is good so far, but they can’t really detect NTD until 15-20 weeks. I’ve been immersing myself in the medical journals so I’m pretty up on the science. The most recent meta-analysis suggests the fear is overblown because 20 min in 104F water doesn’t raise core temperature to the threshold level for defects. I’m running bathtub thermometer experiments to test the water temp and I estimate it was under 104 because 104 feels too painfully hot to stay in for more than 10 seconds for me, and my wife has more sensitive skin than me.
But I’m still absolutely freaking out that I boiled my sweet innocent baby. This is our first child. Looking for any reassuring stories from anyone here who took hot baths in the first trimester and had a healthy baby. Would also be interested to hear from anyone who had a bad outcome like spina bifida or NTD (if it’s not too sensitive for you to share). Thanks very much in advance!