You aren't being oversensitive, and your feelings are real and emotions just are what they are. You of course don't need to be around people that make you uncomfortable. I do want to gently suggest that you consider the role of interpretation, since I've never seen drag queens as 'making fun' of feminity, but rather they celebrate it and revel in it out of love and affection. It's possible if you see them with a bit more charity you might come to see them in a more sympathic light, and in doing so you might feel like you have more allies in this world.