Does having intercourse daily help/hurt your chances of pregnancy?

Breanna • 2 angels with tiny wings up there watching over me.
Me and my fiancé are TTC and have sex almost every day. Does this make a difference (aka hurt) my chances of conception? We have been trying for about 9 months now, and I have just recently began tracking my ovulation. He has a two year old daughter, so I'm worried that I'm the problem.. Help please!