Lavender oil is good for pain.
I find that diluting some Lavender oil in some carrier oil such as olive oil and applying the lavender oil to my back or even joints it helps relieve the pain.
Lavender oil has anti inflammatory properties as well as analgesic properties which is what allows the lavender oil help ease the pain.
If the pain is muscle pain or joint pain the lavender oil can help.
But if the pain is caused by something else then the lavender oil may not be able to help.
Putting heat on your pain such as joint pain or back pain can also help ease the pain or even taking a nice hot soothing bath.
If you do apply lavender oil or essential oils on your skin make sure to dilute the lavender oil or other oil because it can cause burns to your skin when applied undiluted.