What's going on? TMI

So i'm just going to get to the point and see if you ladies know what's going on . Okay so after having sex with my SO , of course there is discharge from his sperm and my cum. I always clean up and use the restroom , so when I go to bed there is nothing . I usually wake up once during the night to more discharge but its only on the lips of my vagina . Recently after having sex , it's the same as always , but in the morning I woke up to discomfort , my whole underwears were soaking wet from front to back. This has happened twice, and instead of waking up once in the middle of the night I find myself waking up like 4 times so I can wipe. I have no clue to why this is happening .