Losing my balance ?:/

Mudasira

I’m 30 weeks pregnant and this is my second pregnancy .. when I walk, sometimes I randomly lose my balance because there’s this weird pain in my tailbone .. last week I was going down the stairs and got that pain in my tailbone and lost my balance and fell from the stairs. Two days ago it happened again! Is this normal ?? I’ve heard ppl say it’s the effects of the epidurel since I took it in my first pregnancy .