Nothing the doctor can do?

So just before Christmas me and my fiancé went to the doctors for the 3rd time asking what else can be done as we've been ttc for over a year and a half now. He keeps saying that as my man has a child from a previous relationship fertility clinics won't help us and there's nothing he can advise. I've had my blood tests and my man has had a sperm count. Now the doctor hasn't suggested getting tested to see if my tubes are clear or whatever else is available. Is this right? Is there NOTHING he can offer to help?