I have had a dormant pilonidal cyst for 5 years but I have been experiencing some lower back/butt pain recently- especially when I sit down. I am worried that I will have flare up due to the pregnancy, especially as my uterus grows. I asked my midwife about it this morning, but she wasn't very familiar with pilonidal cysts. And it's been difficult to find solid research on it online. Has anyone else had a pilonidal cyst that started to bother them during pregnancy?