Question for Navy Wives with kids!!

Jessica • Pregnant with baby #2!! Due December 7, 2016!! 25 yrs old. Mommy to Landon. 💕
I can't seem to find any answers on the internet so I thought I'd ask here. Are there any navy wives who can tell me how soon you can get pregnant with baby #2 after your husband leaves for basic? We are getting married June 23rd, and then he's going to enlist soon after. He's already talked to the recruiter multiple times and has done everything as needed. The only thing left is marriage. We've been holding off on trying for another one because he can only join with two dependents, myself and our 21 month old. I am going crazy and would just like to know at what point can we conceive again..?