wisdom teeth

If it's not one thing it's another. Got my filing today...fine...was very brave .... until she then tells me that I need another wisdom tooth extracted (yipes). I've already had the bottom two wisdom teeth out, both required stitches and were horrific experiences, even with the second one being done under general anaesthetic. The dentist assures me that upper wisdom teeth come out much easier than lower ones....I hope she's not telling me porky-pies, 'cos I've opted for no sedation, just the numbing injection. How I hate going to the dentist, now I have to go again next month for this extraction, and then make yet another appointment for another filing. Is there a dark corner anywhere that I can hide in?