Sorry to hear about your uncomfortable night! Most of us have been there at one time or another. Just as it takes some time & a number of trips to learn the ins and outs of tent camping, so it goes with hammock camping.
In my first night in a hammock, I had the thing strung tight as a guitar string between two trees. Laid down in it, tried to wriggle into the sleeping bag, and looked like a kayaker doing the first half of a roll: I spun 180* horizontally and SPLAT!
So, the best advice I can offer now is: try out your setup before you need to depend on it in the woods. Sleeping bags and pads in hammocks DO work: but not all pads work well in all hammocks due to differences in hammock width, length, etc. Sleeping bags work as top quilts, you don't zip yourself into it, etc. It takes some practice to sort it out, and there's a TON of info and helpful people here to lend aid.
And, by the way, welcome to the world of hammocking! It can be both ultra-light AND ultra-comfortable!