Donuts? Is that what you are eating? You don't describe your diet but I guess it's not that great.
I suggest to you that before you start with these magic procedures you try to sort your diet out.
Apples and bananas, water, boiled rice. Eat 3 apples a day, every day.
You can't fix anything inside if you keep eating rubbish food. Nothing's gonna work.
The apples should easy the congestion.
Then you seem to have some bugs inside, again they are not going to go far unless you get healthier. You can get parasite pills (ParaClear) from Ebay and do 2 or 3 courses. However ... your diet must be good or they will be back.
Also do physical exercise (buy a jump rope for $5) or just walk or swim, and learn to relax.
Don't eat sticky food like donuts, pizza, cheese, beans.