Hello.
1)Blood in toothpaste could be because of infection in the gums.
2)When it hurts on pressing that means your cap might not be fixed properly, or there could be food lodgement.
3)X- RAY instead of OPG and close up pic of the gums would be helpful for better suggestion.(everything looks fine in OPG)
Next Steps
Clean that area using interdental brush,that will give you good relief.
Health Tips
Hope your question is answered