Will washing my hands twice or more times ensure they are clean or just waste soap and hurt my skin?

I cant help but wash twice atleast because of my ocd thats started up since i got pregnant for the second time, i think the first wash will remove most of the bacteria then i wash a second time to ensure all the dirty soap and germs from first wash is off, then i do 3rd, 4th, 5th if ive touched stuff i think is alot worse bacteria wise such as changing my babies nappies or going to the toilet myself, or mould or rubbish/bins. thanks x