9 months TTC and no positive yet

Last June I started TTC. It took me 5 months to conceive and I sadly miscarried at 12 weeks which was in December. I stared to try right away in January and have now been trying for 9 months with no luck. Is this normal? Should I be going to the doctors or should I wait until a full year?

How long did it take you ladies who have conceived miscarried and all?

Thank you