Hi @Evg and welcome to our forum!!! You will find a lot of advice and sympathetic responses here but you won't find any name-calling or judging from others. Everyone has similar issues, although mine are mostly (though not always) daytime, handled with pull-ups, so you know you have come to the right place! If I were you, I'd definitely talk to your doctor and try to rule out any physical causes, such as diabetes or even a long-running infection of some kind.
I agree with the others about the diapers versus pull-ups for you. After all you want to use what's comfortable and effective for you, never mind what your friend or neighbor may think!!! Incontinence supply vendors and other medical supply outfits should be able to send samples out to you so you can see what works best. That said, do invest in some sort of mattress protection. I always say it's better to have it and not need it than to need it and not have it! Mattresses are rather expensive and you don't want to become a regular customer at your neighborhood mattress store!!!
So please don't be a stranger and let us know how things are going and what you decide to use.