sorry you're in so much pain. i would relate the pain to eating the hot dog (really not good for us), esp since it started a short while after eating the hot dog. i don't know much about antibiotics, but maybe that can contribute to worsen things even more.
in cases of obstructions/partial obstructions what you should do is take pain meds and put your self on liquids for couple days till it all clears out. most times that's enough to clear it out. but if it doesn't get better within say 3 days, or you start vomiting uncontrolably, then you must see a dr.
i used to have these obstructions every once in a while before and after my colectomy. for a long time i refused to take pain meds (just have a terrible fear from taking too many meds), and usually just put my self on liquids till it slowly clears out. i usually didn't vomit and could tolerate liquids, so i thought what's the point in going to the er..? they would have done the same thing - pain meds and liquids through iv. as long as drinking is not painful and you're not vomiting, you can do it by yourself at home. but when it gotten too bad i went to the hospital.
i hope it clears out soon, let us know how you're feeling, k?