Unfriendly Attachments

Ever since I was a little kid I've experienced unexplainable things that my parents always brushed off as me having an over active imagination and I've lived with this long enough to know that it's not, as I've explained in my past stories I see things that are unsettling to me but they've never done harm to me except for one that I hadn't seen since I was eight, but recently the beings i'm seeing have become more physical with me and I'm not sure what to do.

It all started a while back after I saw a well known medium in my city about what I was experiencing and how I could stop or put a simmer on what was happening to which he explained I had multiple attachments to myself and that they weren't all friendly. He offered some ways to help but I should have known from what he said that they might not have been happy with that. After I started bringing more religion into my life and did my best to control my brow chakra, things started getting stirred up. It started small with occasional knocks on the wall near where I was sitting, voices being heard and footsteps more than usual, but that soon turned into things being thrown at me, hearing screams in the middle of the night, something trying to pull me from my bed and having my hair tugged or other members in my family being harmed and experiences some of the things I was. I live with my older cousin and dad, both have very little experience with anything paranormal though my cousin in his younger years did dabble in things lie ouija boards and playing things like three kings but said he never really seen or heard anything he couldn't explain before now. Given his line of work where he deals with many sudden or tragic deaths these no doubt he might be followed around from time to time but it never seemed to be a problem until what I experienced magnified, he started waking up with scratches all over his body, bruises, he heard more things and even saw some stuff from the corner of his eye on occasion and generally just became more aggressive. My dad on the other hand said he usually hears knocking or banging on his wall coming from the empty spare room next door, will hear his closet door rattle, see things move about in the dark and usually spots something watching him from the top of the stair.

Normally I would just assume it was ghosts playing pranks or something like that but since it's harming one of my family members along with myself I'm not sure what I can do. There was also one odd occurrence where, when I was getting ready in front of a mirror I saw my reflection contort into something I can't even properly describe before the door to the bathroom slammed shut and it had gone back to normal, i'm not sure what it means but I don't like it. I'm only 19 and I don't want my family or myself to get hurt or scared by the things that attached themselves to me because they know I can see and sense them. Is there anything I can do to stop it? Or if anyone knows any place in Chicago that can help me get a handle on this?