Possible Facebook Hack. ?

[Alexandria]

Okay so I had my Facebook deactivated for about 3 months and one random day I got an email about the Facebook Account Recovery, so I went on and reactivated it and found 2 message threads sent to 2 of my friends and also 2 people accepted "my" friend requests. I was NOT on facebook within those 3 months WHATSOEVER, so how is it that someone got on my profile ? It says it was from an Android phone, which I have, but there's no way I got on or anyone else in my house. One of the messages I read in my inbox was my friend asking "me" to a party and my reply asked if there'd be hot guys to hook up with ? LOL there's no way I wrote that because I wasn't on AND I am not even interested in partying ! I found it the day after it was written. Also, I was texting my friend about a job opening, and on facebook, my messages were talking about the SAME thing ! F****** creepy, I have no clue what went on, but if anyone could help, it'd be nice ! I already went through the Facebook help center, nothing really helped me understand this situation. Is it possible that someone did this to me ?
Also, it's weird because the messages said they were from 9 in the morning and my friend said she doesn't wake til past noon. What is going on ?!

[pri✍]

Your account was hacked, fortunately you still can access it. Immediately, step one, change your password to FB & to the email you use for FB. Log on & log in.

Check your Active Session in Security Setting, close any active session except the current one.

Check whether there are installed apk in Apps under Account Setting, is there any suspious apk, or the best is turn off platform.

Do deep scan for virus, clean cache, cookies.