Suggest Treatment For Depression And Loss Of Appetite

Hello. I ve been feeling off lately. My girlfriend broke up with me a few months back and ever since then I ve sorta let myself go I guess. The first thing I noticed was a change in my appetite. I stopped eating as often to be quite honest and had little to no interest in eating at all. I ve lost/regained approximately 10 pounds in this duration of time. I ve also get very weak, my stomach hurts most of the time. I have pain all over my body. I don t know what could be contributing to these symptoms. Anxiety? Panic attacks?