Quick question for you ladies

My husband and I just started ttc this month. I'm currently half way through the dreaded two week wait. My question is now that you are ttc do you have your husband do the deed inside of you every single time now? Or only on your fertile days? Now that we have started trying he's been finishing inside of me every time we're intimate but I'm worried that I'll possibly get some sort of infection of we do that to often. Thanks and baby dust to everyone(: