I had little vaginal bleeding today (5th April) which was painless and had no other symptoms. Its was not normal period bleeding as my due date is around 15th of April. I am sexually active. But, I last had intercourse in January beginning and afterwards, I had perfectly normal periods with no other symptoms. So, this can't be pregnancy I guess. What it could be? Should I be really worried about it? Should I see a gynaecologist asap? Please help. Thank you.