First of all please don't take anything I say to heart. I am not trying to be mean. Just to set you on the right track. I know how it can feel to worry constantly about passing or failing and what to do next.
That being said the first thing I think you should do is stop posting and use your time more wisely. You have 11 different posts in the last day and while a few are about gaining information, most are just ones like this. I have seen your posts in the past and they are similar. Now everybody posts threads like this but they usually limit it to one or two. The reason people aren't responding is because you are flooding the forum and people are either too afraid to say anything because they don't want to hurt you or they think you are crazy and are ignoring you.
Now I don't think either way. I think you just need someone to put you back onto focusing the right way. If you are truly a pure scientist at heart then maybe you should look into doing something in that field but if deep down in your heart you believe that you would be happiest being a physician then don't give up. Being a great doctor is less about pure science and more about how you interact with people and gut feeling and knowing what to do in each situation. While we may be taught that a + b = c, in medicine it doesn't always pan out that way and being able to recognize that will make you a better physician than knowing the pure science of it. Remember, this profession came from science as it's foundation but with a lot of guessing. Look at the first surgeons, they were barbers. Sure as we advance we get better technology and tests and exams to pinpoint the cause of the disease. However, treating a patient is more about diagnosing before you order tests and exams and all that while making the patient feel like you know what you are doing and making them feel good about it. A good diagnostician has a gut feeling of what's going on, orders the right tests and exams and acts accordingly not the other way around. I can't tell you how many times I have seen physicians in the hospital that knew less about the science and more about patient rapport and got away with murder while the ones that knew every little detail and could recite to you like an encyclopedia but lacked the patient rapport had patients that hated them, didn't ever want to come back to them and were more willing to sue them for a mistake rather than the other one who knew less.
So if you truly love just the science then do that but if you without a doubt love the other aspects then don't give up and stick with it. The way to do that is
1) stop posting on the forum and wasting your time. that energy is better spent applying it to the things you need to do to pass and getting through the hurdles required to finish
2) surround yourself with supportive friends, family, or both
3) study to pass the exam. what I mean is don't just study to know the material. Having knowledge is half the exam, the other half is being able to give them what they want. remember the questions are written by physicians who are told to make them hard so you are answering less a question about medical fact and more about what a specific physician feels you should know about a certain disease or disease process
4) don't ever give up. if you've come this far then you can make it through. all of this is just a test and just like any other one you have passed you can get through this one as well.