Thank you for including a photograph of your skin with your question. Without the photo, we (the physicians answering) might not have realized that this could be a serious situation beyond just the common bruising that can happen with any filler. You say your Restylane was injected into the crease between your eyebrows, yet the photo shows bruising and blisters only above that in the midforehead. This is why the doctors have said, and I agree, this is a medical situation that should be taken seriously and immediately evaluated by your injecting doctor AND possibly by another doctor as well (see a dermatologist, too, if the injector was a plastic surgeon). I agree with both possibilities of a blocked blood vessel which can lead to long term consequences, and also perhaps herpes zoster ("shingles"), which can be dangerous in this area.
If you go to your doctor, and neither of these is the case, we will all be relieved but happy you went to ask.