Ghosts or spirits in my house!? D:?

Soo wierd things been going on in my house example: babys bottle cap was in the middle of the tabe n my sis was tlkin wit my mom n nanner then the cap gets tossed from the tabe to the carpet which is jst a couple feet away.. i was in the shower at the time no one else was home. 2nd loud noises at night like is something very heavy fell my nanner was the only one home while me n my family where in L.A. 3rd jst awhile ago some books fell in the kitchen everyone is sleep right now tho the books had something heavy against them n everything jst fell. dnt who y this is happening and also idk if its ghostly or not bt my mob lit up on fire 2 weeks n firemen didnt knw how it tgot started no signs of anything that could start it. its really getting kinda scary even more for thee lil baby in the house D: