I have two odd things that happen at times that are disturbing

1. Wondering if something is real

Yesterday I was out with a friend at the casino. I was talking with her and briefly mentioned i had to tie my shoe. I bent down tied it and when I looked up she was nowhere to be seen. I text her and she did not respond right away. I started wondering is she was ever there or if I was there by myself. I Started to panic and then she came back from around the corner.

The other weird thing that happens more frequently is I get this strange sensation of being side swiped by a car or of someone breaking into my house. It's not really a hallucination because I know it's not there and I can't actually see it. It's almost like a flashback that didn't happen. The sensation is there but not the hallucination.

Does anyone else experience either of these too and if do do you know what causes it?