Check your blood sugar 1/2 hour after your injection. Check again in an hour. Never give yourself another injection until you know what your blood glucose levels are.
I do not know what kind of insulin you are using. From your post, it "sounds" like you are using a rapid-acting insulin with your meal so your blood sugar does not rise if you eat carbs. I also don't know if you use a sliding scale or carb to insulin ratio; i.e. 1 unit of insulin for every 15 grams of carbs.
Humalog starts working 10 minutes after injection. Novolog, about 20 minutes to one half hour.
Again, you should know what your blood sugar levels are before you inject yourself multiple times.
I've gotten raised bumps after injecting my insulin. Press on the injection site with the palm of your hand for at least 10 seconds. Since the insulin is injected right under the skin, the pressing will help the insulin spread further from the site and aid in absorption.
If you need help immediately after such a reaction, call the manufacturer of the insulin or your doctor's office. This is better than giving yourself more insulin if you don't need it.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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