Hi and

!! I'm so glad you decided to join our amazing group of women!! TTC is really tough and when you get to be our age, there is a definite urgency added to it.
Is there any way you can post a link to your chart so we can take a look? If you aren't seeing a definite temperature shift, then I would have to guess that there may be an ovulation problem. It definitely gets a little tricky if there are inconsistencies with temps though. As for the OPK tests, those are great for letting you know when you can expect to ovulate, but I need to warn you that even if you get a positive, that doesn't guarantee that you will definitely ovulate. Basically, you can have an LH surge, but not ovulate. Frustrating, I know. My recommendation would be to continue to monitor your CM, take the OPK tests, and continue taking your temp. I think a lot of women our age have some issues with CM. What I have done to help with that is take Evening Primrose Oil from AF until O, take 2 tablespoons of honey with a little bit of cinnamon on it from AF until O, drink lots of green tea (I drink decaf), and then take Mucinex from about a week before O until O. That combination seems to have helped me quite a bit. I also take Fish Oil capsules, but I'm not sure if that helps with the CM or not...it certainly doesn't hurt and it's great for when you get pregnant.
One more thing...you can take soy isoflavones to try and trigger your body to ovulate. I took 120 mg from CD 3-7 and I ovulated on CD 13. Some women take it days 5-9. You never want to take it longer than 5 days in a row. It hasn't always worked for me, but it is a nice over the counter alternative to Clomid that you can try before you go see your doctor.
I hope that I have been able to help at least a little bit. I'm sure others here will be able to have more to add.