What Causes Severe Headache And Muscle Pain While Having Depression?

Hi I am riya I am 22 years old I have medical history of fits in childhood I alright nw. I am suffering from depression last 1 year 6 months exactly.at first I had suffered from severe headache and muscle pain .I consulted doctor neuro specialist he priscriptioned Eliwel 10mg I am using this for 1 year. I didn t find any improvement in me . I started using this for headache .Later I searched on Internet about eliwel 10mg i found out they are anti depressants . thought that this medicine is for headaches .my mom is suffered from depression for 10 years she is alright right now. I am have feelings of sadness, hopeless, helpless, and worthless. I feel i am eating than usual, i feel nervous .Heartbeat raises for no reason. sad, anxious, Loss of interest in social actitives and hobbies.I feel irritation most of the time. For no particular crying Feelings of guilt,Sleeping too much.feeling slowed down . Difficulty concentrating ,remember things, making decisions. What should I do ?