congrats on doing a successful flush! i get dull aches for a few days sometimes after the flushes. the flush really is doing something... so its normal to be alittle sore. especially since you did 2 flushes in one.
sometimes newbies make (the mistake, in my opinion), of flushing every few days. i think they're just not used to the flushes, so they mistake normal after-effects for dire consequences. so... unless you get sharp pains.. no need to rob your body of its recovery time by doing another flush too soon. you did something really good for your body, so you can feel good about that!!!
the other poster gave you good info about electrolytes... (i take selectrolytes from morin labs, its worked wonders for the after flush body recovery. but it won't help the sore feeling!)