I hear ya!! Thankfully I've got the belly growing now so I have something visual... but I've got an anterior placenta, second pg with this, so any movements I feel are slight and sometimes I don't feel anything at all for a while.

Someone said that to me too - second pg, you should feel it earlier, blah blah... up until I had a belly, I was like you - forgot sometimes that I was even pg!

Don't fret, it'll all be ok