Medium Experiences With Family Members Passing

It all started when my brother past away a couple of years ago. I was so depressed and well I wasn't in the best relationship either. So anyways we went to AZ. To attend my brothers funeral and I was outside of the house alone crying my eyes out and I asked my brother to please let me know that he was okay and that he was still around us. So all of a sudden I feel the chills but didn't think nothing of it since I was outside in the dark, and a couple of seconds later I started to walk forward and I start to hear someone behind me running after me so I start to run and I screamed, when I noticed I was already at the neighbors house and he's like oh man what was that, so I asked him if he heard that and he's like yes. So I look back and I saw a shadow figure in the dark just staring at me. So when everything was over I went back home and every night after that, I was woken up by a shadow as tall as my brother just staring at me. But after a couple of years past it all stopped. Also one day before my aunt passed away I dreamed her telling me to let everyone know that she was okay. So I got up and thought to myself omg I'm going crazy, soon after I got a phone call from my mom telling me that my aunt passed away. That freaked me out. But after that everything calmed down. Then just recently my grandmother past away and I was really close to her, so I started to hear voices in my head and seeing things that scare me, I really can't sleep at night. I came to this website for answers, and I have found out that when I meditate it helps me to be more stronger, because honestly all of this scares me. I would really like to see if I can get some feedback and advise. Thank you all for taking the time to read my story.