My boyfriend doesn't want sex

Whitney • I am 21 I want a baby but my boyfriend is not ready. We are also going through some rough patches.
My boyfriend never wants to have sex I mean it as been 2 weeks! When we do he can't get off! He goes soft a lot and I don't know what to do! Help me! I don't know what to do to make him understand that this makes me feel so unattractive! I have tried to talk to him and it seems to be over his head!