Why do I feel sick to the point of throwing up when I’m with my girlfriend is this normal? I’ve never liked a girl like this but I’ve never noticed this problem before. How do I solve this?

It is clear that you like her so your sickness is most likely not stemming from a place of disgust or dislike. The most viable exposition could be that you are dealing with some type of anxiety. You liking her is causing you to become nervous to the point where your body is going to initiate a biological response . Making an effort to become more comfortable around her could greatly help your situation and also practicing techniques listed on 7 cups to quell anxious thoughts and responses could also prove sufficient. I wish you the best of luck in this and hope you can overcome it!