7 months and still waiting for a positive.

I feel like I’m at a loss. I know that people have been trying to conceive a lot longer than I have, but it still hurts. I thought that I would get pregnant right away and now I’m not sure what I’m doing or not doing anymore. It’s been 7 months and I’m starting to panic. Not sure if I should go to my doctor or just keep the faith? I’m starting to loose hope. I was hoping to have a positive for Christmas. Advice? 😔