I just removed the forehead bandage and a few grafts were stuck on it. Will it have an effect on the final outcome?

It is best to contact your surgeon for post surgery issues and care since all doctors have slightly different instructions.
You will have hair loss after surgery. You may have graft loss after surgery. Not all the grafts will take. You won't really know until you see results in 6 to 12 months.

If you lose any grafts within the first 4 days after a hair transplant you may have lost them permanently. We normally wash the patient's scalp one day post op and instruct the patient to wash their scalp with a special shampoo and a sponge provided by our office. Subsequently patients wash their hair twice a day for the next four days. After day 5 to remove any crust, patients can leave the shampoo on for 15 minutes and then wash their hair normally. In your situation, I would consider contacting your physician to see if the office wants to remove the bandage themselves and to make sure your bleeding is under control.

It is hard to tell from the pic.  I would not think it would make a huge difference.  It would depend on their location and if they are all from the exact same spot.
In regards to the bleeding it is possible to dislodge grafts by touching them.  We have our patients spray the grafts with a mixture we give them the first 48-72 hours.  We don’t want the touch the grafts and accidentally dislodge them.  
I would call the surgeon in regards to both questions

First, you should never had a bandage on your frontal recipient area, When such bandages are removed, they tend to pull out grafts