Has anyone had a root canal done?

please share your experience. I'm in constant pain since it's near a nerve but I have no money right now to do it so I might have to wait 2-3 weeks before doing it while on pain killers. Has anyone had it done? how was it? obvioiusly I'm not waiting 6 months for it, I know it has to be done. thoughts?
Has anyone had a root canal done?
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