I never want to stop

After my first child I swore I would never have more. Pushing for 2 hours, the sleep deprivation, the anxiety. By my sons 2nd birthday I welcomed our 2nd child. Throughout this 2nd pregnancy I said that’s it, no more. For real this time. I’m 2 months post partum and I never want to stop having children. Is it my hormones? It’s so hard having 2 young children but I get sad at the thought of this being my last. I’ll never get to experience it all again. I’m sad that they grow so fast. I’m sad that I can’t have 100s lol. What’s going on here.