Did i travel back in the past?!

Hey everyone. im soon going to be signing a pact with lucifer. The pacts going to be here very soon, ive been having strange experiences. For example having extreme deja vu. i was in the kitchen and putting some food up and my mom was arguing with my sister. and i got hit by this feeling of deja vu and like i heard someone speak to me. And another time waiting for my teacher to get to class watching the kids walk in i had another experience like that. im wondering is did i some point in the future mess up or anything and evoked a spirit to effect the past? or what is deja vu in your opinion