I appreciate your query.
Considering your earlier history and the history you have provided this time round, I urge you to go for a checkup and an ultrasound
examination at the earliest.
Sometimes, miscarriages may have painless bleeding also, if the cervix ( mouth of the uterus ) dilates, that is, opens up smoothly and without much resistance.
So you should rule out a threatened abortion
in your case, particularly with a previous history.
Also, since you mention that you suffer from constipation
, the blood could be present in your stools
- maybe some anal fissure
or haemorrhoids ( piles )
You should take prompt treatment in this case also, because both constipation and bleeding per rectum are not favourable things for a pregnancy
You should consult a specialist at the earliest, and also go for your scan ( ultrasound ) as early as you can.
Meanwhile, take ample rest, avoid sexual activity and strain unless your ultrasound and examination are normal.
Take plenty of fluids, high fibre diet to avoid constipation.
All the best.