HI Welcome!
Yes you aren't alone! I had a c/s with my first and became pregnant 5 months post partum. Needless to say #2 became even more impatient and arrived 3 weeks early making our first 2 only 13 months apart. Hey I have heard of kids who were even closer though!
There was one family who got pregnant practically after giving birth. However their second ended up being 2 months early (preemie), luckily the baby pulled through but imagine telling people your kids are only 7 months apart!

AND they are biological at that! ROFLOL! Yeah, I can imagine those looks.
I have really enjoyed having all of my kids close together and I know it'll be even more "fun" as they get older!
Anyways Welcome!