I been have my period since I was 11 years old.. and I never have blood clots before.. I only had blood clots right after I had my two kids and it stop and went away... and now I been bleeding for 6 days heavy with grape size blood clots.. with pain when you push on my lower belly and its hurt... I have to change my pad every 1hour to 1/2 hour.. and every time there are big large blood clots coming up.. should I call my ob gyn or go to the er.. I know I'm not pregnant cause I'm on the shot.. and I use condoms when I do.. really need some help on this.. I don't do much.. but take care of my two year old son and 5 month old daughter.. and I'm not stress out anymore.. need help

You need to contact your doctor as soon as possible. Changing pads this often is sometimes a warning sign that your doctor must know about.