Ahhhh terrified momma!

Ok y’all (sorry, I’m a southern girl), I need someone to calm my nerves. We want another baby, we have 2 beautiful girls, ages 6 and 18 months (born 07/13/19) so this would be our third and final. When I presented the idea to my hubby and we were just thinking about it and trying but not NOT trying I was ok but now we are actually serious and like..really trying and I’m so nervous. Our 2 girls are 5 years apart but these 2 would be about 2.5 years apart..someone assure me that babies close in age are good and not nearly as scary as people think because I’m freaking out (in a good-ish! Way)