It's very possible to have these things happen but not remember them. Actually they are remembered, just in different parts of the mind. The mind is really incredible when it comes to survival and protection.
I have DID (multiple personality) and was convinced for many years that I was crazy or imagining things.
I'm not saying you have DID but you should talk to a qualified therapist who can help you sort these things out.
I wish you all the best.