What to say, and to whom

Two routes, and they are not in competition.

The clinical one. Ask your doctor for a referral, and say the three things that get you to the right place: how long it has been, what has stopped working, and whether you are getting intrusive memories. Take somebody with you. Write the three things down beforehand, because the appointment is short.

If your faith matters to how you want this handled, say so at the first meeting. Good practice is to work alongside somebody religiously knowledgeable rather than around them, so that nothing genuinely required in the religion gets treated as a symptom.

The other route is other parents who have had the same loss. It is the thing bereaved parents themselves most consistently report as helping, and there are established organisations for pregnancy loss, stillbirth and infertility in most countries. This platform can point at them. It is not a substitute for the clinical route where the markers above fit.