Hi,
Everyone forgets things so don't worry, your Bg's seem to be coming down, stress can be a big factor. If your still injecting it may be unlikely you had ketones as you still are getting insulin, but of course it's always best to check,
What sort of meter do you use? my meter is set to warn me to test for ketones at a certain level so i never forget because it's beeping at me to do it!
Also, are your sets very sticky? i use a spray to loosen the adhesive so it's easy to pull off. You simply spray, leave it on for a few seconds and it's very very easy to pull off so it's extremely helpful if your cannula is a bit sore. I get this on prescription but one canister has lasted me ages!!
It may have been pressue on the set to make is sore, or youcould have hit some scar tissue or a small vessell that made it sore or bloody.
I always change mine if they are sore or feel funny. I occasionally get cannulas that bleed a little bit even if they haven't been painful or sore.
If the site is continually sore or looks angry and red it's advised that you go to your GP to get some antibiotics to prevent infection. This has never happened to me, i've had a badly bruised site before but nothing that i've been worried about, i keep an eye on sore sites for a few days but they always heal fine.
Remember to alternate your sites as you would injections and i'm sure you'll be fine.
Follow your initiative and instinct when it comes to infusion sites and cannulas, if it doesn't feel right it probably isn't. Change it or talk to a GP or nurse if your unsure.
Most of all don't worry too much you'll be a pumping pro before you know it