Unprotected sex

JoJo • 💋💋
My partner and I have been together for a while. 1 year ago he had started ejaculating in me. Moral of the story. I have never gotten pregnant. I am wanting to now but still always getting my period... Would it be me or him or both of us that needs to be checked? But somtimes he's not always fully inside me, would that matter? 
Thanks in advance ladies!