hi
Welcome to HCM and i can understand your concern.
swimming is one of the good exercise to keep your body fit ,as well as to reduce weight.
yes cola contains lots of sugar.if you are diabetic ie high blood sugars ,fasting blood sugar >100 and post postprandial sugar level>140 considered as diabetic.
if you are diagnosed as diabetic then u have control your sugar level first, by diet like using more of wheat,ragi,vegetables and avoid rice, sugar added food, by doing regular exercise like walking or swimming and you have to start
antidiabetic drugs like Tab
Metformin you can start with, after consulting your nearest physician.
if ypur sugar levels gone too high ,then you may suffer from kusumal breathing , in that bad smell comes out from your mouth.but it is rare.
common other causes of bad smell breathing are
oral candidiasis or any bacterial infection.
Tips
1. Maintain oral hygiene
2. Use mouthwash after each meal
3. Do gargling with hot water and salt
and about your pin and needle sensation, you might be having perpheral neuropathy because of diabetis.
i hope i have answered your query
thank you take care