Terrible bleeding and inflammation from 6 veneers. What can be causing this?

In this type of case, a series of situations may be happening, all related to the gums.
When the gum limit is passed with the material of the veneers or with the cement, this may occur.
you should go to your doctor again or a second opinion.

Hi:There could be multiple reasons for inflamation of the gums.  It is difficult to know without xrays, and clinical exam.  On easy solution that you might want to try is to rinse your mouth with Lumineux Oral Essentials Clean and Fresh mouthwash twice a day to see if the bleeding and inflamation goes away.Best,Dr. Maddahi

There are  number of reasons why your gums are bleeding. That's a sign of inflammation and it needs to be addressed. Talk to your dentist about it and if you're not happy with his/her thoughts I would get a 2nd opinion.

There are several reasons for gum bleeding.
A) could be due to the inflammation of the gum margins around the venners caused by overhanging margins of the cement or Restoration 
B) left over excess cement irritating the gums 
C) Due to poor oral hygiene maintenance 

If you had a gum cut and the procedure is recent you should wait until the swelling and inflammation disappear at the most five days.If the symptoms continue after this time, it is necessary for your dentist to investigate the cause of this bleeding, either through a scan to detect the cause.  

If your dentist placed veneers, and now you have alot of bleeding- there are several possibilities. 
1- there may be leftover bonding cement, which would need to be cleaned up. 
2-the veneers may be over built and impinging on the gums. 
3- if this was a 'no prep' veneer case- the extra thickness may be the cause.
I certainly would suggest a return visit to the dentist that placed them. If this is the same dentist that suggested having your bone shaved down- I would seek a second opinion.