What to Do!!!!?????

Right now I am in a pickle. I just got back my results from my last math test and they were not very encouraging. I was surprised because I understood everything on the test and did all of my math properly. After going back and looking at the ones I got wrong I saw that one of them was a stupid mistake and that to others dyslexic. Then I noticed that two other problems were wrong because I had not rounded them. I thought back and remembered asking my teacher whether or not I needed to round something if the problem did not specifically say to. She had said not and so I made sure to read all of my math problems through to make sure they were or were not asking. The two I got wrong did not say to round. I asked my teacher about it and she said something like, "Even if they do not tell you to, you still need to round". I reminded her that she had told me not to, but she seemed to not take that into account. She just blamed in on the test being unclear. This frustrated me because I would have gotten a high grade if I had understood this. I really wish she would see this. It makes me angry, but I want to respond in the right way. Is it wrong for me to go to someone else and explain the situation for should I just leave it as is. It was not a supper bad grade, but those four missed points would make a big difference. I just needed to get out my thoughts.