Cramps, headaches, tiredness, clear, slimy stuff and
yellow slimy stuff (with or without a lil blood) can't tell you much. If you think you are pregnant, take a home pregnancy test, or go to a doctor and get a beta hCG test. If you think you have an STD, go to the doctor and get tested. If you think you might have a urinary tract infection or kidney infection, see the doctor.
Good luck!