I also think you need to sit down with DP and discuss openly whether or not the both of you want another baby right now. To me, it feels like you really do, and if that's the case DP needs to know that. Obviously he realizes it's a possibility, getting AF + unprotected sex will always bring about the possibilty of another baby. But I think actually talking about it out loud, discussing why you both are taking the risk each month would be really helpful to the both of you in defining what it is that you both want, and whether or not, given the circumstances, what you want abs what you need are marrying up