trying to conceive at 36

Rebecca
I'm trying to conceive at 36. We are on month 4 and using opks. So we are hitting peak days and making sure we are having sex at the perfect time. I've had six children and he's had one. When should I ask my dr for help. My last baby was 5 years ago and we had to use clomid. I'm worried I'm on that path now that I'm just too old.