My baby is now 11 weeks old, has had an NG tube from birth (due to renal disease) and is also being bottle fed but is now refusing point blank to have any milk from the bottle which means we have to use the NG tube for all feeds. He is finishing a cold and has been vomiting again even though he is on Gaviscon Infant sachets but I've been told it would return to normal as he is less bunged up, which has not happened yet. He is retching after feeds now and is vomiting on and off. Any ideas?