Hey all. I don't post here too often, but I always keep up with these boards. My name is Kelly and I am 21... I feel like I need to communicate with people who may know what I'm going through right now...The anxiety is just getting to me again! I don't know what to do

Well, yeah, I am in a major slump right now and have been for about 2 weeks. I feel like there is no way to pull myself out. I feel sick all the time (more like a "blah" feeling,) dizzy, headaches for the past week, on edge MOST of the time, chest pains, its just horrible. I'm a full time college student with 18 credits and it just seems like the work is just endless. I get 6 hrs of sleep then am at class from 11-4 every day, followed by school work and reading all night in the library. Weekends aren't even much of a relief for me, cause I always have more work to do.
Are there any other students out there who struggle with this as much as I do? I feel like the first few weeks of the semester are fine, but then a month or so into it this ALWAYS happens. I just get run down and stressed!! It happened last semester...I was fine for the first month and a half, then I ended up in the ER and anxiety spiraled out of control. The act of walking the 15 min to class each morning is pretty much equivalent of running a marathon when I feel anxious...It just seems like everything is so hard for me. When I feel normal, stuff like this isn't an issue. Is it a matter of learning how to handle stress better? I'm an extremely sensitive person so its so hard for me to do. Now I have all the tests, essays, etc. hitting me all at once these past two weeks.
I do get to go home for spring break for a week this friday. I'm not looking forward to it as much as I should be. My parents are going through a bad divorce (yet they still live together at home) and its extremely awkward and a really bad situation that I HATE to be involved in. I feel bad but I have been ignoring calls from my dad, grandma, mom, everyone because I hate dealing with it and thinking about it...Ughhhh so stressed!!
My biggest problem when I get in one of these slumps is that I just can't get out of it. I know that sounds obvious. But with all these phyiscal symptoms i feel like I'm dying. I'm a hypochondriac as well, so you can see how my thought process works. I'm convinced I'm dying on top of it all, because its hard for me to believe my mind can create all these crazy symptoms!! As you can see I'm a mess right now.
I guess I'm not really asking for advice, but if you have any i would absolutely love it. If there is anyone out there who can sympathize with how I feel, please let me know. I feel very alone right now.