Well you made it through 5 days already. You should congratulate yourself. What kind of side effects are you experiencing? Are they physical or emotional? I guess the physical ones are much easier to overcome. Are you taking anything else, such as Xanax? If not, you should try taking them together. It will relax you a little and you won't be so frightened. You should also try to keep yourself busy, it will keep your mind off how you're feeling. As far as the medication kicking in, it is a slow process, but the day will come when you say to yourself "Hey, I did not wake up crying today". So, keep taking the !@# pill, relief will come.
Best of luck to you and keep us posted on your progress.