SC, the early days are really tough physically and mentally - what you are feeling is completely normal for day 5. What you have to keep in mind is that it will take time to heal and the pain you feel is evidence of the healing process: you are still in withdrawal. Some people are able to do this "solo" but many are not - this is what SR, AA, and other recovery groups bring: they keep us in contact with other people who are on the same journey.
I highly recommend you find local face-to-face support from others who understand and support recovery. AA is where I found that, but there are others which may "speak" to you more. The only thing I did well alone was isolate - which in recovery is the second worst thing we can do (first of course being to drink).
You're doing fine - please stay in touch and let us know how you are making out.
Best,
Eddie