I've lost it....

I like to consider myself a good cook. However, I cannot cook corn on the cob to save my life. This is so dumb. I remember when I lost it....When I was pregnant with Alivia, one day, Rob and I were outside doing some yard work. We were BBQing and I threw some corn on the stove and went back outside to help Rob with something. I ended up overcooking the corn and ever since have not been able to cook it right. It's the dumbest thing. Last night I even looked it up how long to cook it-it said 5-8 minutes after you put it in and it began to boil again-I did this exactly-it was undercooked. Rob never complains about it but it's making me crazy. I guess I'm just thinking about it too hard. I don't know what to do!!!