the reason you was told about casualty is that if you are type 1 ,it can turn serious real quick, for e.g i was told i may have type 2 at first and was to wait 10 days for a gtt, over the first few days i was feeling iller and iller ,by day 5 i bought a monitor and my bloods were in the high 20,s whereas they were 12 when i first visited lloyds, i phoned the dr and was told to go to casualty, luckily i did as i had ketoacidosis and was told i wouldnt have survived if id waited for gtt,
try not to worry , just get that blood meter and test and see what you are blood wise, if it is high and you still feel bad then see your gp /walk in centre urgently