I think to a certain point, all nursing students feel this way! We have to learn such a large amount of information in such a short period of time, and then suddenly we're thrown into clinical and we feel like we're expected to be pros! From my own experience, I found that I had to keep things in perspective, realize that I might forget a thing or two, and remember that is was OK to ask my instructor questions. You shouldn't be allowed to go off by yourself anyways until you have seen and done at least two of what ever the procedure is that you have to do. The point is, you have to feel somewhat comfortable with doing for example a head-to-toe assessment, giving an injection, or administering medication, etc.
As far as feeling uncomfortable because you are a male nursing student, I would say don't let that show! Realize that your sex doesn't matter! A nursing student is a nursing student, and you're all there for the same reasons, to get experience, and improve your skills.
I've never replied to someone living in Jamaica. How's the weather there?
Good luck with everything!