trisharau,

Your profile says you aren't sure what plan you are following, and you haven't read any books, so the best thing to do is read.
Compare a few different plans and see which one most fits you and your lifestyle (there is a link to the right that allows you to see bare basics of low carb diets, start there).

I cannot imagine getting through the day without extra potassium and take calc/mag twice a day as well.
This comes from Protein Power Lifeplan....(synopsis)
You may think you are eating enough food to meet your daily requirements especially all the vegetables that you now consume....Wrong, most vegetables have been grown in dirt that has become minerally deficient, and/or go through food processing techniques that strip foods of nutrients. As well, our water supply is so processed and "purified" it no longer has minerals in it, good or bad.
How many calories a day are you eating? Enough to fuel your body for 24 hours of basic breathing, cell division, repair and replacement? Your body may be saying "not enough energy here to run the lungs, and the heart and run to the store....better slow down and conserve."
When you feel the effects of an improved diet, you will be hooked.