Virus from Yahoo

I'm using Norton Internet Security ver 18.6.0.29

My yahoo email was hacked and spam sent to all my contacts that included a link to buy pharmacuticals. We've all see this before.

After changing my password, I was notified the emails were still being sent from my address. Contacted Yahoo and they infomed me it was probably a virus (not unauthorized email access). They suggesed I contact Norton to see how internet email could be scanned -or if it could.

Short of deleting my Yahoo ID (which I've had for many years), what options do I have?

My Norton runs in default mode, contiinually updating and regularly running scans in the background.

 

Please help, as this has been very embarrasing and I need it to end before I'm run out of town.

 

Thank you