Is he jacking off?!

So my boyfriend usually takes quick showers. 5 maybe 10 minutes TOPS!!! Well tonight he's been in the shower for at least 20 minutes and that's been since I watched the time. I'm currently on my rag so we aren't having sex but I'm like "Surely to God he isn't jacking off at my house, in my shower!!!" 😫 please ladies, give me some hope here.