Эх и замоталась/вымоталась/умоталась я сегодня.
The one with "already" would be "Я сегодня уже не в форме, подустала маленько".
To sound okay this one requires specific context like maybe someone persuades you to have another tennis match; you reply that unfortunately you can't, you are already worn out today and if you go for another match you're going to kick the bucket straight away.