You could be paranoid, at least thats what it sounds like.
Some women get stressed and worried and all about possibly being pregnant, that they give themselves symptoms, when no pregnancy is present at all.
Your period is due next week, try and relax yourself, think positive and calm yourself. Stress can make us late, have weird periods and do weird things to our bodies.
Take a test next week like you plan to do, but relieve yourself from stress.
Its hard to say if you are pregnant, because anyone could guess that you are or arent. only a test and doctor can tell you if you are.
And its a little early for symptoms, so you could just be stressing yourself out and being paranoid.