So sorry Maddie,
Although I personally hate the NG tube it does have its uses...And a blockage is the best reason that I know of to have one put in...if you swallow continously while they are putting it in it goes better...they can also freeze the back of your throat before putting it in so that your gag reflex doesn't kick in as much...I always cry (more a reflex than from any real pain) but it does not hurt...
I hope that they find what is wrong and get it fixed up for you.
I had a loop of bowel that was caught up in adhesions so there was only one fix...surgery. They did it through laporoscopy and it went very well...only 2 nights int he hospital too...
You might try bouncing around a lot, walk, rolling from side to side on a large ball (from soccer to pilates ball, they are all useful) gently twisting or rolling back and forth with your legs pulled up to your chest (on a yoga mat or a carpet please or you will hurt you back), wearing a large scarf or extra wide, stretchy belt (sort of a back support belt or one of those stretchy sweat-belts...) helps too...massaging your tummy with some oil on your hand (massage in clockwise circles around your belly button...(so says my 85yr old sister-in-law) and warm baths can all help you to pass the blockage...But if it does not resolve itself within 24hrs then get to the ER...They usually keep you another 24-72hrs before deciding on surgery or not.
Good luck
Sharon