i only started seeing Dr. Kee from 2nd trimester. He is really patient and he will take time to explain in detail.
Unless there are issues, most couples should be able to conceive within a yr of unprotected intercourse.
If you are anxious, you can start going for hormones test and also semen analysis for your hubby. This will probably put your mind at ease and save you time in case of fertility issues.
All the best!