You've had such a bad time with fever and diarrhea. Both could be the cause of your weakness later. The fever and the diarrhea ached your body thus, making you feel tired. You must hydrate yourself with water and soup. Light and easily digestible meals should be your priority. 

This is why a high dosage of these drugs can make your health worse. Signs you may have different from this could be severe dizziness, drowsiness, and abdominal pain. You should call emergency services and seek help immediately. You must get medical assistance promptly to prevent any further problems.

The condition indicates difficulty with bowel movements. It could happen if you don't eat enough fiber, do not have enough water, and do not have enough physical activity. Symptoms are abdominal fullness, dry, hard stools, and sluggish bowel movements. Please, consider advice like incorporating fruits, vegetables, and complex carbohydrates into your diet to relieve the symptoms. Daily physical activity and increased intake of water will facilitate the process as well.

You might have an H. pylori infection. This bacteria can cause stomach pain, make your belly feel uncomfortable, and even cause a heavy head or cold sweats after meals. It can also lead to stomach ulcers. The good news is that it can be treated with a combination of antibiotics and acid-relief medication. Be sure to follow your doctor’s instructions and complete the full course of treatment to fully eliminate the bacteria. y.

You have been having a sense of imbalance for the last 4 to 5 days and vomiting at the slightest of food intake. These can be attributed to low blood pressure. When blood pressure reduces it is possible for you to feel dizzy and the sensation of sickness to be experienced. To help, consider drinking more water and eating small meals throughout the day.