Second cycle of Clomid. Noticing signs and not sure what to think! :/

I'm on my second month of clomid. About 4 days after sex, I had light spotting. Then two days after I had a little more but only for a night. Now here I am a week later and I'm feeling pressure in my lower abdomen and kind of like a "tugging" feeling every now and then. My legs have also been achy. My period isn't due for another 6 days. We're TTC and are really hoping for a positive this time! :) Thoughts?