plan b question , please help

okay so today i had intercourse with my boyfriend and towards the end he pulled out and turns out the condom got stuck inside of me and so i went to the bathroom and pulled it out myself . then like an hour and a half later i took a plan b pill but i have trouble swallowing pills , so i tried to take the pill and couldn’t swallow it with water , then i tried again and couldn’t and the pill was beginning to dissolve so then i jus swallowed it and now couple hours later i have diarrhea, so my question is if the pill will still be effective even if it dissolved in my mouth but i still passed it through ? and if diarrhea is a side effect from the pill meaning it worked ?? please help .