I'm going out tonight but I've got diarrhea?

I have been looking forward to this day for over a week. First we're going drinking, afterwards I'm going to sleep at my boyfriend's house. Just one problem: I woke up in so much pain today, spending a lot of time in the bathroom, sweating like hell and feeling nauseous. It's way better now but I don't know what I can expect. My tummy is still hurting. And I do really want to go out tonight and to be honest, I don't want to settle with just 2 drinks. What do I do?
Updates
+1 y
I appreaciate the concern but I'm sure about going tonight, I just need some remedies and if posibble things I don't have to buy.
Updates
+1 y
It's gone for the most part, I took some sleep. Thanks guys:)
I'm going out tonight but I've got diarrhea?
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