29 weeks & very dehydrated..

Yesterday I was feeling really crampy and having on and off cramps in my back ever since I woke up. It ended up getting pretty bad, so I called my Dr and they got me to come in and checked my cervix and everything and it turned out that I was having contractions due to be really dehydrated. So, they sent me to L&D for 2 bags of fluids.

Well, I woke up this morning and I'm feeling A LOT better but my back still feels kind of crampy. Nothing like yesterday, not on and off cramps or anything just a light crampy feeling..

Does anyone know if anything I could do for to help with the crampy feeling? I've been drinking only Gatorade.. as my Dr told me to do so because of the electrolytes.

Also, I'm only 29 weeks!