Many have suffered the same symptoms as you hen fasting. Sorry that you failed. But the good part is you did 14 days of fasting and gained experience, next time it will be better.
Post fast eating is very important, especially after a long fast. Eating eggs was not a good way to break your fast. Eat a raw vegan diet for at least ten days, you will do much better, then introduce eggs, oils etc. to your diet.
If you have Gerd history, I suggest you go through series of Liver Flushes (LF), you need to clean your liver and gall bladder. The bile is not moving properly and you will not digest fats easily. Liver-Flush will give many other health benefits.