I don’t know

Hey girls! Help?!!

For a while I have been pretty unhappy. There was only one person that made me genuinely happy and now they aren’t in my life. Since they left I have felt worse and worse. I keep having anxiety and getting really stressed. I honestly don’t know why I feel so unhappy and stuff. I don’t feel like any of my friends will listen or care if I talk to them. Recently a close friend was diagnosed with depression and whenever we talk she talks about it and just rants to me. All of my friends get mad at me when I seem sad or upset. I cant keep pretending to be happy. I don’t know if I am depressed or just sad or what.