Is A White Stringy Worm In Stools Post Intake Of Undercooked Pork A Cause For Concern?

Hi this question is for any medical doctor available to answer. Just recently i think i may have eaten some undercooked pork at a barbeque. In any case its been weeks now and i havent had anything wrong, even after the first 48 hours i had consumed it. I just had a bowel movement however and i saw what looked like a white stringy worm. Upon observing it more in the stool is seemed to move a little bit before disappearing into my fecal matter in the toilet. Im very worried about this and not sure what to do. Should i go to emergency over the weekend? Will they be able to let me know then and there what the results are? Will the require a stool sample or will they check for other things as well? I dont want to waste anytime allowing a bad situation to go to worse.