Do You Believe in Ghosts?

My body was tingling, i thougth i had made myself pass out from the lack of oxygen under the blankets.  Since then i have moved into my boyfriends house and had a lillte girl,  but some things never change or go away I guess.  This house doesnt make me feel uneasy, but strange things do happen once in awhile.  Sometimes at night when i am in bed i feel like something jumps onto the bed.  I used to think it was my cat, but everytime i raise my head to greet him he is not there.  So i would lay back down, then i would start to feel like there is something moving at the bottom of the blankets.  I just lay there and i could feel it creeping sort of up my legs slowly.  I am not going to lie I am 34 and this really scares me.  It happens more than i would like and my boyfriend thinks that I’m nuts.  I believe whatever this is now in my house is not the same as all my past experiences.  I believe this is maybe a child or something because i dont feel threatened by it,  just scares me half to death. So do you believe in ghosts?  If anyone ever asks me i never hesitate when answering with a big “YES”.