I am feeling this way too. I was feeling great this morning, but after my 2nd shake, my port area started feeling very sore, and I had the fullness feeling in my chest. I was actually glad to get that, as I have not felt that much, and I have been able to get in about 900 calories/day and 32-48 oz of water. I'm not sure what is up with the port hurting so badly. It almost feels a little tilted, like leaning forward. I hope everything is ok. I will see the Dr on Friday, so I will ask him then.