Miscarriage thought I was copying feel so low

Hello I recently had my first miscarriage in January at 8 weeks. I have one lovely son who is 3 years old and love him to bits. However I thought I was copying really well going the gym, being positive but last couple of days I really feel down just looking for some advise or any one who has been through the same thing. People just keep saying you have a lovely family which I know but I can't help wanting to be a mom again can I. I worry as I'm nearly 35.