Depressed? Or just moody?

Ive been so out of it lately. All i want to do is depart from everyone except my 1year old son. I lose my cool really quick, especially towards my mom and boyfriend. Im still in school, facing financial problems and god can i mension my boyfriend.... he ticks me the F@#* off, i dont even want to have sex anymore. All i been thinking about is taking my son and vanishing. Please help me???? What should i do?