i contracted this while in india. the symptoms vary from person to person but i had it bad. i was naseaus, had diarrehea, had really bad gas that sometimes wouldn't come out and my stomach would bloat up looking like i was 3-4 months pregnant. i also had these really gross burps. if i ate anything i would immediately have to lie down and rotate like a rotisserie chicken to relieve myself of all the gas formed by the bacteria interacting with my food. it was horrible. the western medicine they give you for it is pretty heinous as well- it knocks you out, gives you a metalic taste in your mouth, and does a number on your digestive system. as a result i got really constipated and was super uncomfortable, fatigued and out of it.
why do you think you have giardia? where could you have gotten it from?