i am in 33 week of pregnancy, 2-3 weeks ago i noticed hard lump inside skin on left side of groin . it is not much painful but alight tender to touch. the midwife told me it is possibly inguinal hernia , but my ob doc said it is difficult to confirm it right now, it could possibly be sweeling of region due to pregnancy, or a swollen lymph node, i am worried weather it could be some sort of cancer