Question on when he cums inside of me

I feel silly asking this but I am genuinely curious and this is the internet so here goes! When he cums inside of me I usually try to stay put for awhile which isn't a problem. 
Although I feel like sometimes two hours later I'm still extremely wet/leaky down there. Does anyone else have this? Last night we had sex right before sleeping and I woke up and some of it came out. I am usually not very wet at all. I do get EWCM but never anything like this so I think is definitely that. Why isn't it being absorbed? lol.