Day 19 and 20 after starting my peroid. Day 5 through 9 took clomid (clomiphene). I now have dry clumpy stuff coming out. What does it mean?

Hard to say. Even though Clomid (clomiphene) is a fertility drug, it also acts as an anti-estrogen on your cervical mucus. So your "fertile mucus" may come out looking more like rubber cement. Additionally, if you're having more sex than usual, you may just be releasing the components of semen that have accumulated there. Lastly, you could have an infection, so if you have irritation/redness, see your gyn doc.