Trying for baby 2

It took us four years to have my first child who is now 6 months old. We’re already trying again for baby 2 as I’m worried it’ll take just as long again. Well sure enough I’m having the same problem... the last two months now I haven’t ovulated and I’m so worried it’ll be another very difficult time. I’ve always wanted 3 kids but I’m thinking due to age and the difficulty I’ll be having to conceive I might just have to “settle” for one. And though I so desperately want more children, Im still so happy I have my son. Pic for cuteness