Hello,
These symptoms are suggestive of atypical depression. In which along with your low mood which usually brightens with any positive event in your life you have increased sleep, increased weight, heaviness in your arms or legs, sensitive to people rejection etc. All of these or few of them can be present at a time. Along with depression you can have anxiety symptoms which goes hand to hand with depression and can worsen with time. These symptoms can be taken care with the help of medication and therapy.
Next Steps
Contact neuropsychiatric clinic. You can contact me at my clinic for further help.