Having anxiety here too. I have it even when I drink and have been to the doctor about it in the past. Biminiblue mention 4-7-8 breathing and I recommend it. It sounds rather simple and doesn't seem like it would work but IT DOES.
Inhale through the nose 4 seconds.
Hold breath for 7 seconds.
Exhale through mouth for 8 seconds.
Repeat once.
The reason it works is because it slows your heart rate and gives you something else to focus on.
Hang in there. This too shall pass!