Does this mean i am depressed?

i have lost confidence in myself and i no longer want to partake in social gatherings and i've started to enjoy my own company. My gf wants to go out all the time and i'm the opposite of what she is feeling and i have started to lose interest in her. I have a medical bill which i cant pay for and i have to move back with my parents because my roommate is joining the navy. I want to kill myself and cry every moment and i cant go to sleep anymore so i have to take tylenol pm to achieve this. gah i am probably depressed.