Asking for more prayers

Yesterday morning, my dad woke up at 2:00 am with SEVERE stomach pains in his lower abdomen (under his belly button) and was bleeding (sorry dad, TMI). As the morning progressed his pain became more intense to the point he was in tears and feeling light headed. Now, if you know my dad, he has a VERY HIGH pain tolerance. He must have been hurting. Finally, my mom took him to the ER where they administered some morphine for the pain and did some blood work. After several hours, they decided to admit him for the night in order to better observe him. If he continued to have the bleeding they would keep him and prep him for a colonoscopy to take place on Friday. He did continue to have the bleeding.
They drew his labs again this morning at 4:00 am and it showed that he has lost about a pint of blood. Another concern has been his blood pressure. If you have read any of my precious posts you know he has EXTREME high blood pressure and is currently being treated for it. Today as they checked it at 9:00 am it was at 160/94, at 12:00 it was 90/70, and at 3:30 it was 175/85. That is not normal. My mom is in the process of trying to get in touch with his cardiologist to let him know the state my dad is in. Poor dad HATES hospitals and so he has not been sleeping, therefore he is very tired. However, my mom said he finally slept for a couple of hours this afternoon. He will begin is "prep" for the colonoscopy and if you've ever had one done you know how much fun that is. Please keep him in your prayers that the prep goes well, that there's no more blood loss, and that the colonoscopy shows something and that it's an easy fix, and if not, that the doctors have the wisdom to find the problem. His colonscopy is scheduled for 11:00.
I'll let you all know when I hear anything more but in the meantime I'm asking for all prayers for him.