Is this just a Facebook glitch or was I hacked?

[Hey]

Okay so a long time ago my friend like all my pictures from her account and started freaking out because she never did that and thought she was hacked. That was all the way back in the summer, though, and she changed her password. Then just today my friend liked a photo of mine that she claimed to not have liked but when I went to check that picture, the like wasn't there and I didn't receive a notification either. Then my other friend suddenly messaged me saying ''omg stop spamming me my laptop is slowing down'' but I wasn't actually spamming her. I checked her photos and it doesn't say I liked any of them. Then my friend told me to check my settings where it tells me my location and there aren't any different locations (we are online friends so they all live in different parts of the US). We were all freaking out and we thought that one of us in the group could be a hacker but no one is really smart enough to be a hacker. Do you think this could have merely been a glitch?

[jan jan]

im thinking it was a glitch.