21, and in major ****?

First things first, dump your boyfriend, explain to him that he's one of the factors making you "unwell". Let him know that you don't need his support. Explain to your parents that its your like & no matter what they want you to do, you are the one having to live with it the rest of your life. If you haven't got the qualifications that you require for your desired course, take a year at your local college, work your behind off and achieve exactly what you want. Good luck, you've already started changing things by having a good rant on here