Michael,
If you live alone especially, it would be a very good idea for you to keep track of your daily moods. 0 feel great 10 awful-worse. Perhaps list the emotions you are feeling also they can change.
This way you can tell if the OTC product is working, or if you get side effects from it.
If you start to rocket to high numbers or roller coaster up and down, you need to call your doc back.
I have been where you are. Good plan, just do it wisely and safely.
Good luck.