Hello, I had gone through your query and understand your concern. First of all, be relaxed. You don t have anything serious. Repeated cold, nose block is suggestive of either allergy or Sinusitis. An underlying sinus infection, makes you feel sick. Even repeated cold due to allergy makes your body weak. For this, I suggest you to consult a ENT doctor who can evaluate and put you on proper treatment. Once your problem is solved you. will get back to normal condition. Most of the times, a small penis during sexual activity is due to anxiety. Also, your prolonged health problem which makes your body weak will contribute to this. So, once you are back to health you will be ok. You can also consider following tips, 01) Do exercise daily for 30 minutes. 02) Drink clean water- min 3 liter 03) Keep your self occupied with good books, music. 04) Don t think about your disease. You don t have anything serious. You just need to take some medication which will take care of cold. 05) Inhale steam to clear the blocked nose. 06) Have adequate sleep. 07)Eat healthy food. Avoid oily food, fast foods. 08) Keep yourself away from negative thoughts. Hope this helps. You can always contact me for any further queries. Regards, Dr. Prathap Kumar