Hi Stayingafloat and welcome to HealingWell,
Shy and Kitt have made some good points (Leaving me with not much to say! lol) Contacting the doc about the meds is a good idea if you find they are not working... it may be as simple as changing them to one that suits you better. As for sunshine... its FULL of Vit D. Which have been proven to help with depression. Also, exercise itself helps depression since it increases bloodflow to the brain etc...
Do you have a dog? Walking the dog is great exercise. Also, playing with the kids in the garden is good too. Not too stressful, but enough to get your pulse going. You may have to force yourself to start with but, keep with it. Its SOOOO worth it!
All the best