Is my house haunted? I'm being serious.?

I'm 15 years old. My mom and my real dad divorced 10 yrs ago and my real dad lived in Ohio and we moved to Tennessee. Last year he was diagnosed with terminal cancer. He lost his battle two weeks ago on Friday, May 20th. His funeral and burial were the following Wednesday. Well, two nights ago I logged onto the newspaper obituary site, and as soon as the site pulled up, both of my lamps in my room shut off. It was midnight. I was the only one up. Well, last night, my lamps flickered the entire time I was watching basketball (his favorite sport.) This morning I get in the shower, the bathroom lights started flickering. My friend called and asked me to go for a run. I got in the car and left without my "lucky" rubberband that I normally wear around my wrist, and I realized I left it on the end table. Well, when I got back it was wrapped around my camera (laying beside the rubberband) and tied into a bow. I'm home alone since it is summer break. I'm not crazy what so ever!! I've never believed in the paranormal, but something just isn't right. He did some bad things, cheated on my mom, and a few hours before he died (i was not with him, but his sisters told me he said this) he said he loved me and was sorry he couldn't fix everything that he had done. I was kind of close to him, but not really "father-son" close. I don't mind him being here if it is him. But I need some help. My mom believes me, but my step dad does not. Please help. Thanks.