Watermelon makes you poop??😩

So I’m 13 weeks pregnant, and I’m working early and I thought instead of eating something heavy, since I don’t do mornings at all, I’d buy some sliced watermelon and have that. I ate it all. And now my stomach is feeling a bit upset. And it made me go to the bathroom. Idk if that’s normal maybe cause it’s fruit. I have no idea. But is it normal for my stomach to react like that. My co worker said maybe I ate too much, since I’m very small and the water content is a lot. I don’t know. Is it normal?