Vaginal bleeding

I am experiencing bleeding when I poop.  I have a coil fitted so haven't had periods for over 7 years.  Then the last couple of months I have been spotting or having what seems like a period, red blood, brown blood, streaks of blood then nothing.  Then couple of days later, I poop and blood again.  Saw Dr who examined me and said its coming from your vagina so don't worry.  But I am ! They haven't said if I'm menopausal,  I'm 50..have read it could be a hormonal thing..have to strain slightly to poop and I'm always bloated ???