Am I too old?

I got my period again this month 😭😭 I felt like this month would be the month because we did it at the right time and often to no avail. I got pregnant with my daughter not even trying and now we have been trying for 6 months and NOTHING. I just don’t understand why it isn’t happening. I keep thinking that I’m too old now. My husband does not have any children biologically and it would absolutely be his dream come true. He tells me that if we can’t, he will be fine but I just want to give him a child because I know he has dreamed of it his whole life. I’m just so heartbroken. 💔