Did it, done it, been there!!!!
You are fine! I did the same when I was 16 weeks and scared the crapola out of me. Not enough voltage in a lightswich to do any harm (called DR) BUT, if you are concerned call your DR. but I did the same and was told no worries.
Thanks for reply i ended going down to hospital to get baby checked over and everything was fine think i panicked my self too much as when i got there my bp was up so wasnt allowed home till it had gone bk to normal
glad it all went fine!!!!