Depression. Before starting it.

M suffering from depression from past 1 week... M a neet pg aspirant.. Actually I fought with my friend who was my best friend from past 7 years and now I fought by misunderstanding that he is not giving importance to me.. Since he became friend to one of my other girl best friend.. They started hanging out together.. Talking all the time.. That started bothering me...I have spoke to him and her about this so many times but still I used to get convinced at that moment and again same I used to get frustrated.. Now I completely broke up with the other girl best and my guy bestie s not even talking to me.. That's bothering me so much and I have to study for exams.. Which m not able to do.. M not even able to eat, sleep nor study... I don't know what's wrong with me.. Actually thought of starting antidepressants but thought ll take suggestion before starting it...