Ttc take one!

My boyfriend and I have just decided to try and have a baby. I'm on my period as we speak but he'll be home during my ovulation!!! I'm hoping this will be our shot. He's a U.S Marine so trying to schedule this is going to be a tough one! Thankfully since it's 4th of July weekend, He gets to come home right on time! Any helpful tips to increase my chances?