I had never farted in front of my DH..... Until I was pregnant with DS. I was lying in bed, reading.. He was watching TV in the lounge annnndddd it just... Um... slipped out! He came running in screaming "Did you just FART!?" of course I said no so he actually sniffed around to see if he could smell it!! Then backed off in horror!!! Hahahahaha!!!
So....ahem, yes.. Very common. Another lovely, glamorous side effect of pregnancy!