These are just a few items that need to be taken into consideration before a true estimate can be given. However, homewyse.com states the cost of adding a screened in porch in 2013 runs about $4.74-$6.83 per square foot, a cost that takes into consideration the average price of materials and hourly labor wages.
Instead you should be drinking water and herbal teas such as nettle, peppermint or ginger tea which will all soothe an upset stomach, naturally. Keep some raw ginger or tea bags in the back of the cupboard as a stand-by natural remedy for stomach flu in case of emergences or surprise viruses.
Ginger, and anti-emetic can lower the risk of vomiting, a common result of an upset stomach. This form of relief can have its drawbacks, because ginger ale is a carbonated drink means it is not the best for a gas-filled stomach. Ginger ale will only worsen the bloating. It is safe to say that ginger ale can in fact help an upset stomach.