Thankyou for the question.
First of all I want to know ,have you completed your course of antibiotics,as incomplete treatment can be the reason of your symptoms too.Have you checked your temprature recently?Ofcourse you should not take it easy and should visit your doctor and discuss further dear.
For home remedy for coughing,
nausea and
lightheadedness i am going to tell you a remedy surly it can help you.
Garlic – Inhalation.
If the infection is not completely blown, inhalation should be on the first place.
• Boil water in a pot and add fresh ground garlic (3-4 cloves).
• Lean your head over the bowl and cover with a cotton towel.
• Start the inhalation. Initially you may be feeling uncomfortable, but the steam is amazing decongestant to help clear the airways.
Also you need to modify your life style ,e.g ..pay attention to your diet,regular exercise and plenty of water,fruits vegetables.Get your
haemoglobin checked too as these symptoms can be because of
anemia too and you can discuss further.
hope my answer will be helpfull.
will be happy to hear from you again.
Dr.Maheshwari