Doesn't mean that your email account has been hacked. More likely someone that you correspond with has that email address in their address book and their system is infected.
They use email addresses in the addressbook not only to send spam to but for the From address, a doddle to fake. So headers would reflect what is in the From address, but the IP/Server address is likely to be wrong.
This is a bit of a common tactic to send a spam email to a person using their own email address as this is most likely to sail through any anti-spam filtering as it is from you (dumb filter) and is most likely whitelisted.
I have a spam filter specifically to deal with the form me to me situation and none of my email addresses are in any whitelist.