I miss her 24/ 7

Hey my name is Conor, I am 17 years old n have been going through some tough time in the last couple of months I have been struggling since I was 11, I lost my mom then but didn't realize the pain of the loss at that time as I was well young still, my dad send me to my uncles after that incident as she was never home so couldn't care for me, at my uncles I soon realized they don't like me, had problems with everything I did n I heard them talk negative about me behind my back, in my new school things weren't good, I wasn't able to make a real friend even after to years n every time I tried to make one, they ignored me. I waS always alone n felt depressed n lonely n missed my mom. Feeling helpless I started getting online more often n made a fake fb profile. I added random people from all around the world. There I met this girl called Amber who was going through depression as she was just dumped by a guy she loved a lot n felt unwanted. We started messaging each other n got closer n every time I wasn't messaging her she would do something crazy like cut herself etc. I was helping her n she got more close to me so close that she proposed me, I wasn't sure at the beginning as it was a ldr but eventually got related. Then we started skyping each other. Our Skype calls lasted 14-15 hrs daily n we use to do everything together starting with eating, sleeping n even studying. I got even morr attached to her n was obsessed about her but the more close I got to her the further away she went from me. She started going out with friends staying out of house till 11pm, ditching school n smoking weed n taking drugs apart from heroin n cocaine. But all this was alright as she always said she loved me. I use to stay up till 3-4 am waiting for her to message me. But things got worse n she got related to a guy n didn't even inform me. When I asked about it she said she wanted a real relationship. I was devastated but after a week she came back crying to me saying she can't live without me. Things were okay for a week but she got related to another boy again. Her bf texted me saying to leave her n they are having sex right now. I couldn't believe this was happening after all that we had together. People told me to forget her, I tried but next week was our anniversary n I called her but found out she might be pregnant. I don't know why I said I will go there n meet her n in reply she said if I go there that will be the best thing that ever happened to her in her life. Since then I haven't contacted her as every time I do I get hurt :( I miss her 24/7 n can't get her out of my mind n keep thinking as I never visited her I lost her. I am all alone as well as I don't have a friend n my uncles don't like me. I miss my mom so much now today is her birthday n I feel so unloved n unwanted. I even feel suicidal n feel life is worthless. I would love it if someone would help me through Skype as I could explain my problem even more n that would also kill my loneliness n keep me distracted. I need some serious help with how to move on with life as my final exams are approaching well fast.