It is suprising how many issues with the body can be fixed with just a slight change to the person's diet. The symptoms you are having sound like poor nutrition. To be safe always check with your Doctor when feeling abnormal.
Just by watching what you eat can help your body feel amazing. Drink lots of water! You should be aiming for 8 glasses of water a day. If you are an active person who plays sports you should be drinking a gallon of water a day. Water is very important!