I'm already terrified of this...

My nerves are completely shot right now and I don't know what to do. I started a Chem class 2 weeks ago so I can work my way into a second degree BSN program hopefully within a year or so. I spend all of my free time and more studying for this course. When I got my first BA I had avoided science classes like they were the plague.

Now that I'm older and a care giver for someone during the days, I've realized my calling is to become a nurse. And I really want this...but not only is my Chem professor terrible, it's also causing problems at home. It's a constant battle between this professor who has no lesson plans and doesn't give a shit...and my SO who was a science major, now acting like a drill sergeant. It's like my biggest nightmare. I feel like I have needles in my spine and neck I'm so stressed. I can't even talk to my partner or ask him about a concept without him aggressively quizzing me. Keep in mind I'm a visual learner... So as he's drilling me for information or drilling me full of information I'm not taking it in. I'm literally on the verge of pulling my fucking hair out. He never lets up when I ask him to stop. He tells me to take a break and he starts in again. We haven't even talked today and we live together. Someone get me out of this nightmare!!!