Is my house haunted? What do I do?

Bought a 100 year old house one year ago and have been renovating it. It’s been an absolute slog. The people who lived here didn’t seem like great people.

I finally moved in. Last night a guy came to my house and asked if the house down the street was haunted. He seemed maybe on drugs, but it freaked me out.

Now I’m hearing strange noises upstairs like knocks and tapping. I live alone and this is no fun haha.