I'm not Ruchie, but I'm also awake and thought you might still be around so I thought I'd let you know I'm thinking of you. Sorry that you can't sleep That sucks.
Also sorry that you've run out of meds...I wish I had a better suggestion...do you have money for OTC meds? I know you said you bought Immodium. What about something like Benadryl? I hope this doesn't sound too crazy but a psych message board I've posted on mentions this a lot...apparently it's often used as a sedative when nothing else is available...maybe it'd be able to calm everything down so you can sleep? You'd want to make sure you can take it...but it's the only suggestion I've got.
Other than that, I hope you're night goes ok and maybe you can take comfort knowing someone else is awake as well