After doing some research, I learned that amoxicillin depletes certain
vitamins from the body, like
Vitamins B1, B2, B3, B6, B12, K, biotin, inositol, calcium, magnesium, and iron as well as vital gut bacteria, like lactobacillus acidophilus and Bifidobacteria bifidum (bifidus). So I started to take supplements of these and the anxiety went away. I also bought a blood pressure monitor, to monitor it. It started off high, but gradually went to more normal levels.