Fiancee thinks.....

Ok today is my second fertile day and early yesterday morning me and my s/o got busy and he ejaculated inside of me tmi I know but he wants kids and I have been off of birth control for 4 years I took depo and me and him been together for 6years still haven't conceived yet but he keep wanting to baby dance after 10 hours of him getting off and I asked why and he said because we had a second round and I didn't get off so I feel like I rubbed my sperm out....should I believe that and keep baby dancing cause I feel like 10 hours the sperm should be set until the next day after