TIP: Think the only thing you have to do when your email gets hacked is change the password? It's not.
What most people don't know is that you should also click on the three dots at the top of your page on a computer and check to see if the hacker added any rules to your account. After running anti-virus software, changing your password, and adding 2-step verification (if you don't already have it), delete the hacker's rules.
Sorry to anyone who got a spam email from my account while a hacker controlled it. Thankfully, they weren't able to change the password, so I was able to get it back. I did the first steps, but wasn't aware of how hackers use rules until I looked up what to do if you haven't received any emails since your account was hacked. The rule they set up forwarded all my email to their account and stored it in my archive. After deleting it, I'm once again able to receive email in that account.
I'm usually VERY careful and suspect my new (or possibly old) phone was vulnerable when I was switching them over. I hope you never get hacked, but if you do, I hope this helps.
Please feel free to share. Thanks!