THICK CLEAR DISCHARGE....PREGNANT??

For the past two days I have noticed thick clear cervical discharge. Is this a sign of pregnancy? I have been almost convinced that i am pregnant, because I have had the same symptoms as the 1st pregnancy, like round ligament pain, and a week ago i had a slight yellow twinge to my CM and it was wartery and alot of it. I have also had backpain and the tops of my hips hurt, and slight cramps. But i have taken 3 hpt's and all negative. If i am pregnant i will be 5 weeks on Weds. What do you think? Have any of you had this?