הים לנסות להבאי עוד ילדים

Shalom, first of all i want to apologize for English. I understand what i read but it is hard to write. I am 43 years old and my husband 60. We got married 7 years ago and after a long period of treatments i got pregnant with egg donour And we have a 4 year old daughter. 2 years ago we tried another treatment with no success. We decided that there is no point to continue trying due to our ages, the way we can have children and decided to be happy with the daughter we could have. Although i am the one that gave up first, i still have conflicts with the subject. As the time passes it makes me feel more pressure and conflict. I know the mitzvah about bringing children to the world but i would like to know God's will in our condition - our age and the fact that we cannot have a child in a natural way. Thanks in advance Sarit