Hello Ariel, welcome to the forum.
So young to feel this way. When is the last time you had a 'complete' physical? Our hormones can wreak havoc on us. You have a boyfriend...are you using birth control? Some of those can make depression worse.
It sounds as though you are living in a very stressful environment. This can also have an effect on the hormone 'cortisol'.
I'd suggest a visit with the doctor. Tell him/her how you feel, what life is like for you, your family issues, etc. Get the blood work done and see where you are healthwise.
Meditation seems to help a lot of people and there are plenty of sources online to get you started.
I hope things improve for you. Life can be wonderful, you can get better.
multiple surgeries for rotator cuff both shoulders with residual chronic impingement syndrome, ulnar nerve transposition, carpal tunnel release, wrist ganglionectomies/denervectomies/tenolysis, multiple herniated discs, tarlov cyst, whiplash, bursitis of hips, tendonitis, torus, 3rd degree shoulder separation, torn labrum, ovarian cysts, fibroid tumors of the uterus