It seems like seasonal flu and will take some to get better. It is usually more long lasting and severe than common cold
and other virals.
It will be contagious until your symptoms disappear. It is advisable not to go to workplace or any other public place. Once you get it, you will not get it again for this season. You develop immunity for atleast one season.
The treatment is mostly symptomatic.
For sore throat
and congestion you can try antiallergic medicines like cetirizine
once daily till congestion is better. It is better taken before sleeping. For fever, paracetamol
is good. If despite paracetamol you have body aches and headaches, you can take ibuprofen with it. Paracetamol dose is 500 mg 4 times a day. Ibuprofen dose is 200 mg twice a day.
For nausea and vomiting you can take ondansetron
tablet or syrup as and when needed.
Same treatment applies to your family members (if they have the same symptoms).