Help UK

So my self and my husband are both 38 . Been trying for 5 years for a baby . I have 3 children to my previous partner . Iv been with my husband 8 years married 4 years .

We have had 3 pregnancies in this time all ended in miscarriage .

We have been to our GP . ( U.K.) and because I have 3 children they will not refer me or my husband for any fertility testing to see if we can find any problems with us . I understand we are getting old and I won’t have many eggs left . I don’t get peak ovulation every month .

My husband is fantastic with my children and treats them as his own but he deserves the right to know how it feels to hold his own baby .

Any one els any clues on what I can do before I pay to go privet xx