Diarrhea & pains all over, what to do????

[Meluchja]

Hi,
I woke up yesterday morning with bad stomach aches, thought maybe my little one was deciding to come early again, but after an hour or two I found out the real reason, when I just made it to the toilet in time. Since then I have been going all the time, really really runny ones (SORRY FOR TMI), everything that I seem to eat is just going straight through. Thought I would try having some toast this morning for breakfast, but as soon as I had 1 piece I was back onto the loo.
Anyway last night when I went to bed, my body was just aching all over, my back, my legs, my thighs but I thought this may be my daughters 1st birthday party taking its toll on me, but I'm still getting the cramps. Just wanting to know if it sounds like a gastro bug to you all, and what do you recommend I could be doing to help the aches and the toilet trips to ease up. It is killing me
Thanks