Welcome to the forum. The first thing I would suggest is that you see a doc about your incontinence. The doc will need to do several tests to rule out any serious problems such as a tumor, cancer, etc. Your incontinence can be caused by several issues,.... and yes, stress can be a cause, but from what you have described I suspect there is more to your problem than just stress.
There are a number of high quality products available for day, and/or night use. I would recommend you try one, or all of the following;
ComfiDry24/7
Abena Abri-Form Premium Briefs Level 4
North Shore Supreme Briefs
MoliCare Super Plus Briefs
I have provided links below to two places most people in this forum buy form. There are several places that sell these diapers with the exception of the North Shore Briefs (diapers). These diapers are proprietary and are ONLY sold by North Shore Medical Supply Co. (link below). The other company that most of us buy from is XP Medical, (link provided below) sells all other brands mentioned plus many, many more. The recommendations I made are just a few of the quality brand diapers available, but what I have suggested are among some of the very best on the market.
As a added suggestion, you might want to purchase just a package of the different brand diapers recommended. I'm sure both companies sell sample packages allowing you a chance to try different brands. I'm pretty sure if you call North Shore they will even send you a sample diaper for free, but you will need to check with them. Both companies recommended below are very good, so I know you will well satisfied with your buying experience.
http://www.xpmedical.com/abriform.htmlhttp://www.northshorecare.com/diapers/overnites1.htmlHope this helps.