Freak out! Faint control line..

Ok so im 6 weeks but have had no symptoms yet. Sore boobs and saliva is all. But they seem to be getting easier. Was worried i wasnt pregnant anymore so took a test. And got a faint line. But when looked into it deeper it turns out my HCG line was so dark it took colour away from the control line. With this test the control line is always on the right. Have to wait two weeks to see doc because i am on a business trip right now. And have to keep this to myseld and not tell my work collegues. ​