The speaker is struggling with a painful feeling and trying hard to convince themselves it doesn't count. They admit they think they need medication, then immediately take it back: it's "not even that severe," and others need help more. That pattern of asking and then dismissing the need runs through the whole poem.
What stands out is the repeated "once more." The speaker says the feeling "will subside like it always has," which suggests this has happened many times before, and each time they have handled it alone and quietly. The phrase "Just one more time" sounds like a bargain they make with themselves, as if enduring it again will finally be the last. The final line, "Then I can sleep," is small but heavy. Rest seems to be the only reward they are hoping for.
The mood is tired, restrained, and quietly sad. The odd, jokey title contrasts with the sombre lines beneath it, which may hint at someone using humour to cover up how they really feel.