I've found that this happens with tampons with applicators. If I get rid of the applicator or buy o.b. without applicators and put it in myself, it stays better.

__________________
I see your fantasy... you want to make it a reality

Are you in the mood to be subdued

You see these shackles
Baby I’m your slave
I’ll let you whip me if I misbehave

Tie me to the bedpost

I like it rough
cause I'd rather feel pain than nothing at all