I totally feel you! The posters and two publications sound like it can definitely help you though. If you get any interviews, and they ask you about your GPA, then that's something you can share with them if you'd like!
I'm was also thinking of applying to clinical psych programs, but I think I'm on the other end lol. I have a good GPA but very little research experience. In my opinion, I think you could very well get a few interviews, which is good! Good luck, you got this