e-mail sending pills messages to contacts that I didn't send

My hotmail account is sending e-mails to my contacts. I didn't send any emails about drugs. My account has tons of delivery failure emails. I don't know what to do because it keeps sending the emails to my contacts.

Hello.

Download OTL by OldTimer to your Desktop.

• Close all windows and double click OTL.exe
  
• Click Run Scan and let the program run uninterrupted
  
• It will produce two logs for you, one will pop up - OTL.txt, the other will be saved on your Desktop - Extras.txt. Post both logs in this thread.
  
• You may need to use two posts to get it all.