I feel like i might have a mental disorder?

You need supportive therapy right now, due to your numerous stressors/losses. A psychiatrist can prescribe some med for the anxiety. An LCSW, MFT or PDd ( psychology ) can provide therapy. Please exercise also as this does wonders for anxiety. Stay away from drugs and alcohol even though they nay help temporarily-they will only make the problem worse. If you are on good terms with your parents, please confide in them-they would want to know and may be able to help. . . For that matter, confide in anyone who you trust .Good health to you-make some good choices. Trust me, you need help right now.