Symptoms
Abdominal pain
Diarrhea
Gas or bloating
Headache
Loss of appetite
Low-grade fever
Nausea
Swollen or distended abdomen
Vomiting
The time between being infected and developing symptoms is 7 - 14 days. The acute phase lasts 2 - 4 weeks.
And the diagnosis goes to??:
Giardia
(so glad these guys have been living in me for 3 weeks, not)
