Do you put any stock into pregnancy superstitions?

Chinese people tend to be very superstitious when it comes to pregnancy and well everything!

I desperately need a haircut and wanted to get one when we were in Toronto for the day. My brother told me absolutely not! It's not allowed and to not even bring it up to my mom or she will yell at me.

I'm thinking about sneaking one in next week. LOL She won't see me till July and it won't be noticeable then that I got a haircut.