My partner wants a baby he has 3 children to his ex wife and I also have 3 children

We’ve been together 2 years and I’m turning 34 in may and he is turning 49 the month before in April

What are peoples thoughts on this I’m not sure about it I mean my partner is 49 this year ?? And I’m 34 ....

Is this too old or high risk or unwise ??

Or maybe I’m over reacting a bad I should consider what do you guys think ?

I must add I miscarried last year while in Paris was horrible the baby was accidentally conceived but we decided to keep baby and we lost it ... just sold pram today but he wanted keep it ...