Hi. Sorry you're having a rough time in your relationship right now. It's really hard to manage anxiety and be stable in a relationship. It takes some work.
If you've been together for 7 months you are probably getting to the end of the honeymoon phase. Right about now things don't look so perfect in the relationship and the other person is probably starting to get on your nerves a bit. This is just a normal part of relationships. Maybe this is or isn't the person for you right now, but you don't want to let anxiety make that choice for you.
Try to get a little distance for yourself while you figure out what is going on. Go away for a few days if you can, or just a weekend. See if you miss her and how you feel. Go and talk to a therapist, if you're not already. They can give you a lot of clarity, in even a couple of sessions and can be very helpful if you feel like you aren't seeing things clearly.
Some of us anxiety sufferers have extreme emotions that can be disturbing and upsetting, especially if you are trying to be a loving person within a romantic relationship. I know I have felt loathing, rage and hate for those who I love the most. It's upsetting.
When you are in a relationship, everything that you don't want to see about yourself is reflected back at you through the other person. If you have anxiety, this can be too much to deal with sometimes and you might find yourself pushing your girlfriend away so you can go numb again. I know I have done this. I find the happier the other person is the more I want to push them away or tell them to **** off sometimes.
Relationships can be a challenge for even the most well adjusted, so it's no surprise that anxiety sufferers might be having a hard time in this area. Just find a good therapist that can help you with your issues, so you can be present and loving in whatever relationship you choose to be in.