I'm replying because I was in the exact same situation as you were one year ago (I'm also 21).
I had the surgical at 7 weeks (and like you had never had any type of surgery beforehand), and I asked to be put to sleep, I was slightly nervous, but not overwhelmingly so. The anesthesiologist was very kind, asked me how I was feeling during the sedation (I think it was IV sedation) and told me I should start to feel sleepy, and soon enough I was. They even let me go to sleep with my dignity, I didn't have my feet in stirrups or anything (they must have done that after I got knocked out). I woke up as I was being wheeled into the recovery room (at a private clinic). I was very alert as soon as I woke up, had no nausea sometimes associated with sedation, and only felt cramping (similar to a moderate period) and slight bleeding. In fact, I only bled a maximum of 2 hours that day and the cramping was gone as soon as I was able to stand, and I didn't bleed again until my birth control induced period. Please keep in mind that every woman is different, but I felt compelled to tell you my story, because everything went so well, and there are so many horror stories out there on the web that can be exaggerated.
As for the intimacy issue with your boyfriend. It is normal. I am still with my boyfriend (I've only ever had one sexual partner, he was the father), and I won't lie, it was very hard on him, because he had a difficult time understanding my emotions, but he has been my rock through this entire ordeal. If your boyfriend truly cares for you, he'll have patience, try not to worry. I know my boyfriend says he has a hard time talking to me about it because he doesn't want to set me off or upset me, just let your bf know what you want from him, whether that be a willing listener or comforter or whichever. I was scared to have sex with my bf afterward, but we have been exceedingly careful since then, and he has never ever pressured me (the whole situation was very difficult for me, but realistically, it is difficult to abstain for the rest of your life or until you are ready for children even when your scared. And I do love him. I feel I should be able to express this physically if I so choose).
Please don't hesitate to contact me if you have anymore questions. and sorry for the essay, hope it helped.