2nd trimester problems. TMI to some (maybe)

I'm just gonna get straight to the point. I pee on myself when I cough, sneeze or laugh to hard. I talked to my doctor about it yesterday and he said that it was completely normal for a woman that has had 3 other children. He also said it was normal for women that are pregnant and normal for women who are carrying low like me.

My question is: Does anyone have a recommendation on pads to wear to help that?

I would also like to add that I am not sick. I am coughing because the weather change where I live is unreal. Also because I have more mucus production from my nose that is running down the back of my throat. The doctor says it's allergies and me and baby are healthy.