Lucy, I think that age difference is perfect, even if you fall pregnant and carry successfully the first time around!
My boys are 14 months apart. Yep. I got pregnant with my 2nd son (unintentionally) when my first son was just 5 months old. I was exclusively breastfeeding and avoiding getting back on birth control. I also was NOT having a ton of sex so I didn't think that BC was entirely necessary but as my youngest proves - it of course, only takes one time! Haha!
Anyway, the first 6 months were the hardest but my boys love each other. They fight a lot - mostly over toys so it feels like the title "Referee" got written into my parenting repertoire somewhere along the way but I'm glad I have them this close. They are best buds! My oldest is 3 years and 5 months and my youngest is 2 years and 3 months.
Good luck with TTC in May!
ETA: Yes, we are trying for number 3 - I somewhat feel like this is insane but at this point I kind of thrive off of insanity, haha!