Consult your medical doctor right away please. There can be blood in the stool due to ulcers or other ailments. You should follow this up immediately. Hopefully, it is just hemorrhoids (but the wound may need attention regardless).
You should focus on balancing your energies and keeping your chakras clean and open, as this can enhance your ability to recover. Opening the base chakra does not cause harm; rather, it works to heal and restore you. Working upon the base chakra may have revealed an issue that requires attention, if it’s connected to this process anyways.