I just wanted to post a little update.
Nermal had a mild reaction to the shot, he grumbled when I touched his side and didnt really move for about a day, and they were all pretty lethargic for about two days. Nermal finally got up and got some food and water (thank goodness) around 11pm on the 17th (Their appointment was the 16th at 2pm) They all seem to be mostly back to normal today, they have been staying in the bedroom sleeping but this morning everyone came downstairs. Arthur came down last night and peed in two spots straight away
hopefully that will stop in another day or two. There seems to be a lot more pee in the litter boxes. Oh, and Garfield and Chester threw up the first night, Garfie threw up again this morning but Im also switching foods so that may be the reason.