Daggone, that is an unreasonably long time w/o food and drink. I think you should talk to your doc or someone and see what is reasonable. One time Dave was having something done late in the day and I remember they revised his nothing by mouth order so he could eat first thing in the morning.
The port you describe is exactly what Dave has. I think most of them are like that these days. My oncology surgeon (for my melanoma) was telling us he put the first port in, in our area, and "back then" they had the tube thing permanently sticking out, so the disk under the skin thing is a huge improvement.
The nurses in the emergency room used Dave's port for just about everything they did to him. I have terrible veins and not so fond memories of all the blood draws I had done during infertility treatments. Wish I'd had a port then! I told the emergency room doc I was thinking about getting my own port, just for the heck of it! Ha!
Hang in there, and your chemo will start again soon and you will be glad of the port. Only a temporary delay.
God Bless,
Karen C.