I have recently been getting heart palpitations daily for the last week. i had gotten them in the past but not this frequently. i am under an enormous amount of stress right now but they come on when i'm not actively anxious. should i be worried?

You should not worry much if you do not have other associated symptoms which are chest pain, shortness of breath, sweating, lightheadedness, etc. However, it's time for a thorough check up with your primary doctor.

It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!