I have no experience with this matter and can't speak with authority.

But...

I hope this is appropriate for me to say here; everything I'm about to say is from my own religious beliefs, opinions and interpretations.

I am a Christian, and I believe the Lord is stronger than Satan. I'll pray. If you want to, I think it's a good idea for you to pray, and I would also advise you to contact clergy. If anyone is trying anything satanic on you, you have access to a more powerful weapon.

As a suggestion, when you feel something like this happening, I might try repeating a thought (or out loud, if nobody is around or if the people present are aware and understand) that "God is stronger, God can protect me, and the devil can't get to me." Or words to that effect. Whatever helps.