Hello, I Have Lost About 20 Pounds In The Last

Hello, I have lost about 20 pounds in the last 2 months. Not intentionally. Although I did cut back on Fast Food and junk and drinking, I also went through some depression that made me lose my appetite. I have no gotten my period in the last 2 months. I am not pregnant. I have always gotten carsick (motion sickness) and lately it's been through the rood. My carsickness causes my to vomit. Unfortunately I do not have health insurance so going to a Doctor hasn't really been an option for me. I'm scared that I may have developed a disorder or am harming my body without knowing. Please help.