low blood sugar

I've recently developed low blood sugar issues and would appreciate any suggestions or ideas on coping.
before sugery i had minor issues now and then.
now that i'm 5 years out i've developed not fun issues! i hate to say major cause they are minor compared to full blown diabeties but i am working very hard to keep them minor.
i have to eat every 2 to 3 hours or i get all those yucky symptoms.
i'll do great for a few weeks and get over confident go to dinner with friends and end up eating something simple like a tablspoon of regular salad dressing and be messed up for a week or more after.
is this normal?
or is this my normal now?
argggg
thank you and god bless, pam