Hi Natty.
Nope not silly. I have always had normal blood pressure, but during both of my pregnancies, i had that pulse in one ear. Come to think of it, i'm sure it was my right ear too. Also when i'd try to roll out of bed later in the pregnancy, i could hear like a swooshing sound in my left ear. The strange things our bodies do while pregnant.
It all actually stopped about a month postpartum.

I'd have it checked off course, but i'm sure they'll say that everything is normal.