Baby fever…again ?!

I recently had a baby boy 3 months ago and twins from my first pregnancy whom are 9. I’ve convinced everyone ( but really feel as if I’ve been trying to convince myself ) that I am done having kids . Is it crazy that it makes me sad to think I’d never go through pregnancy again or that I’m even having thoughts of having another so soon ? Not that I want another back to back, but just to consider a 4th this early on. I’m in my early 30’s and I know they’re people older than me who have conceived later on in life & I know they’re also people younger than me with more than 4 kids . I guess I’m just venting because if I mentioned these thoughts to my family they’d think I’m crazy 😩 lol