 [ Symptoms ] missed period by 3 weeks   i had sex with my boyfriend on may 3rd with a condom i started my period on may 2nd my cycle usually lasts 30 31 days we have not had sex since and i have not gotten my period yet i have been very stressed because he moved away and i started a new job and i changed my whole sleep schedule i also was stressed because i had to fly twice for work i also have a bad thyroid i have no signs of pregnancy but could i be pregnant [ Disease ] sorry to hear that this is a stage 4 lung cancer in stage 4 chemotherapy is often the recommended course of treatment immunotherapies may also be recommended as a secondary approach i recommend also sticking to a full vegetarian antioxidant alkaline diet with some multivitamin supplement powder as ensure powder