My first advice would be to check out your nursing school's chemistry requirements. I went to UK last semester to do my pre-reqs (ended up going to another nursing school that didn't require chemistry, but oh well) and I had to take two semsters of chemistry. At UK though there are two routes you can take with chemistry if you're going into nursing school: Chems 104 and 106 (which was a little easier) and chems 105 and 107 (which was harder). I ended up taking 105 and 106, which was wierd because 106 was easier than 105 for me. Your school may not do this, but it's good to check.
I don't really understand why they make nursing students take chemistry classes. Sure I learned some stuff, and some of it was interesting, but I'm not going to use a lot of it during my nursing career. Even if I get my master's degree I probably won't need that much chemistry. In chem 105 we learned about electrons for an entire semester. Why am I going to need to know about electrons when I'm a nurse? I'm not. But it's required, so I had to eat it.
My advice to you while your taking chemistry class is to study, study, study, all the time. Chemistry classes are pretty rough sometimes, so you really can't study enough. And don't wait until the last week or two. Study a little every day from the get go so you're never behind. And go to every class. The math you'll use in chemistry isn't really that hard. I'm horrible at math and I got the math down alright. It's the equations. There are so many of them, and you pretty much have to know them for the test becuase they don't give you any examples or any formulas. So if you can remember formulas and you know how to punch in the numbers correctly, the math isn't a big deal. But the problems are still hard because you have to figure things out all the time. But the more you study the better you do. And don't try to memorize, try to retain.
Also, study the material you learned in class right after the class is over. This helps you to remember all the stuff you learned that day. If you have a couple more classes after chemistry, then study after those. The longer you wait to study, the harder it will be. Read your chapters all the way through (multiple times), do the practice problems, find a study partner, and repeat until you've learned it.
You might be smarter than me so it will come easier to you, but my biggest academic weakness is that I have problems with solving problems (like math problems, or complex number formulas). I'm good at reading and learning that way. And I'm good with hands-on. I did really good in classes like anatomy and physilogy, but chemistry was tough.
You should do fine if you just study enough for it. I hoped that somewhere within my rambling you pulled out something usful. Good luck with everything.