Getting frustrated

I'm sorry, I just need to vent. I had a miscarriage back in April. Finally got af in June. I'm going to be 41 on the 25. I always told myself I would stop ttc at that age. I'm 4 days late, 2 neg tests. I know plenty of women who are ttc now who are older than me. And I don't think I should give up, but I'm just getting so frustrated with this whole thing. I feel like I should be happy with the 1 kid I have, he's 16. I don't know. Just want to cry. Thanks for letting me vent.