Questions before treatment

First consultation about the desire to have a child

Hi team. My wife and I have been trying to get pregnant for 4 months. My wife suffers from chron's disease but has been in remission for a long time, she also has a blood clotting disorder. So far, fertilisation has apparently worked well, but implantation has never occurred. It then came to a very heavy menstruation. Our OB just says to be patient and keep trying. But that sounds like stalling. What is your opinion? Is it possible to positively influence the implantation? Would an initial consultation with you be useful or should we just be patient? We do not know what to do. Thank you very much for your help. Many greetings