Panic attacks and pregnant.

I’ve recently started having anxiety and panic attacks during this pregnancy. I’ve always had anxiety, but I got in under control and was great up until now. I’m 15 weeks pregnant and my doctor tried to rx me Lexapro. But after doing research and knowing I can control most of it I decided to not start the medication. I feel like I need something to take once a panic attack comes on. Sparingly and only when needed. But I’m not sure if that’s an option. What else could I do to try and control this when it happens 😭