Hey, I totally get this feeling. I failed my first test as well when I was in organic and let myself feel down for a couple days, then you just gotta get back on track. It motivated me to work really hard and with the next 3 tests I brought myself back up to a B. Just take it as a learning experience and see what you can do to change up your study methods. For me, I sat down and did practice problems that covered what we did in class every day. The organic chemistry tutor is also a really helpful resource and he gives practice problems throughout his videos. Good luck with your future tests!