Is this normal?

I have severe anxiety, well that was my diagnosis and after changing some life style things i didn’t have as many anxiety attacks. I still get them just as harsh but not as frequent. Anyways, I’ve noticed that I don’t really feel excited for things anymore? I thought that was just getting older but I’m started to think other wise. My birthday had passed and I was not at all excited. I didn’t care and I was honestly trying to avoid it just because it was just another day to me, I even hid it on Facebook to avoid happy birthday posts. My graduation is this weekend and I couldn’t care less about walking across the stage or celebrating, I want to because I don’t want to regret it later in life but I truly don’t care and I’m not excited for it like everyone else or my family is. Also I was beyond excited for my wedding coming up in September, I had all the important stuff planned and I was all giddy for it. But not I almost want to cancel it but I don’t want to because I don’t want to regret it and I also know I’d be loosing out on a lot more money than if I were to just have the wedding. I use to be soooo excited and now it’s like I just don’t care about anything that is suppose to be exciting and happy anymore.