I'm 17 Years Old And Was Recently Put On 80mg

I'm 17 years old and was recently put on 80mg beta blockers due to my issues with anxiety, however this medication caused me to experience some unusual side effects ranging from loss of appetite to depression.

After researching the full list of possible side affects I also discover that erectile dysfunction could be caused from this medication, since taking the medication my erections have changed and don't seem to appear as frequently.

Would you say that the change in erection is down to my mental state or because of the medication? I've stopped taking the medication now and the erections have still not returned to the normal state of frequency.