More power on the natural way, thats where i go first but in your case sometimes there is more going on than we realize that can make us feel down. A doctor visit will give you a much clearer picture and he/she can also let you know what kind of interactions and side effects to look for. In my experience sitiuational depression will possibly mean temporary meds if you and your doc decide on that path. But I am not a doctor.
I have taken anti-dep and stabilizers for years but its for another reason and EVERYBODY is different.
I think I am saying even if just for your for peace of mind, see your doctor and go from there.