Yes -- most professors are generally nice people who don't want to harm their students, mentally or physically. Generally. There are nightmare professors, too, and honestly -- sometimes it's better to drop them and take the course with another professor it, if comes down to it. But most are nice, but busy and tired and overworked.

Inform Disabilities Services, inform your Counselor, inform your Adviser, and before the semester starts, try and e-mail your professors to let them know, and ask if they could also speak to your TAs about it (since you sometimes can't know which one you'll have beforehand, or we sometimes cover for each other, and we usually proctor exams, so it's good to let them ALL know). I know my professor is a little forgetful at times, and if students with special needs didn't remind her to tell us, we'd often times not know beforehand because the student just assumed we'd somehow know or be given a list or something. No, no, that would be FAR too practical.

You need to be proactive with this, as well as a lot of things in university, unfortunately. Most departments are quite disconnected from one another, and often times, people who could REALLY use certain information don't usually get it. So make sure to stand up for yourself and get yourself what you need, and find what person on your specific campus (Disabilities services, Adviser, Counselor, whomever) will advocate for you, and help them help you. Always be polite and courteous -- a professor is MUCH more likely to be lenient and even helpful on a nice student than a demanding or entitled one. But being shy isn't the same as being polite. Many times, people won't want you hurt -- so they need to be informed of how they can accommodate you. Just keep in mind it's something they WANT to do -- not something you should try and bully or threaten them into (I don't think you'd be the type or anything -- it's just....the entitlement of some students is downright frightening. I just want you aware of how amazingly sick of it many professors/TAs are and how refreshing it is to have someone polite, instead.)