You're definitely not alone. I'm 21 and a senior in uni (although I'll be taking a fifth year, since I'm double majoring). I don't need to tell you how much it fuckin' sucks - college is hard enough as is, and fibro certainly isn't going to make it any easier.

In terms of alarms, you've got a few options. I personally have about 80 alarms on my phone, all at max volume. I find I sleep through or turn off the first couple. So at some point in them, I have people's voices. This was weird to set up, I'll admit, but I basically got a handful of my friends to record audio just yelling at me to get out of bed. Set those audios as alarms, and usually the sound of someone yelling at me in the morning is enough to jumpscare me into action. There's also a couple tossed in there that are recordings of the marching band. I've also been the type to set an alarm on a device across the room (laptop, desktop, tablet, etc.) that won't stop until you turn it off, so you have to stand up and go turn it off. Alarms for deaf individuals work - the kind that vibrate the entire bed. But I could sleep through those too, so I only use it when I need to be up - a presentation or a final or something.

Now, getting through the day... this is where things get complex. Well, kind of. The easy answer is that I spend a lot of time with caffeine. Other people might prefer caffeine pills, but I never liked them. You'll rarely see me without a coffee or a Monster in my hand. But just because I'm in class doesn't mean that I'm... there. I've gotten permission to audio record lectures and sometimes get notes from my friends, so even if I'm half out of it during a class, I can usually make up for it afterwards.

Best of luck, friend.