Oh it definitely does sound like teething hon... it can be very draining for bub, as well as Mum... but I hope its short lived for you both and that the little toothie pops through soon

Its fine to use Panadol in measured doses, but perhaps reserve it for the times she has a fever, or if you know she is in a lot of pain.
Just be a bit cautious though - there is a misconception out there that its completely safe, when its actually not - if given in too high doses, or for too long a period it can cause liver damage.

There are other things you can use, such as Bonjela teething gel, or Brauers Teething relief is really good too (its homeopathic).
Another trick that worked well for us (albeit for short periods) was to wet Aidyn's dummies and freeze them in the freezer for 5 - 10 minutes... this gave him some much needed relief.
You can also get teething rings which you can refrigerate as well.

HTH!