Is ptosis genetic and could I pass it on to my children if I have it?

I am a 28 year old female. I had congenital ptosis in both eyes but it was worse in my left eye. I am one month pregnant and am worried that I might pass it on to the baby. My parents don’t have it. In fact nobody in the family has it. Is there any chance I could pass it on to the baby? And is there anyway to prevent it?