Possible past life?

I've always had an interest into past lives/reincarnation but I
wasn't ever sure if I had lived a past life until now. I'm still not
completely sure if I really HAVE lived a past life or if this is my
first life. Here's a list of things that I personally think allude to my
possible past life:

1. 

My odd passion for Japanese culture, specifically Shinto.

2.

Irrational hate for wearing necklaces or anything that wraps around my neck.

3. 

Having memories that couldn't have happened in this lifetime. (My
appearance being different or people I have never met being included)

These aren't all the reasons that alluded to me having a past life but it's 2 AM so I'm not in the best headspace to think of every single reason. I might add things in the replies but I might not.

(Sorry if this sounds off, I'm really tired)