If you have issues with your back - see your doctor not a prostitute.
If your car wasn`t working well - you wouldn`t take it to a garden centre to get them to look at it.
Fuck, wish i'd known that before, got a problem starting on cold mornings and so far the bastards have made me fill the boot with bark chips; sold me over 20 gnomes and i've even got a gas barbecue being fitted on the passenger seat next week

Seriously though I do sometimes get lower back pain and whenever I see a girl they do tend to make it worse as they haven't got a fucking clue what they're doing and you can do a lot of damage quite easily, worst thing is when they straddle and sit on your lower back as it just puts pressure and distorts your spine in the wrong direction.
Didn't realise anyone actually saw a prossie expecting to get a decent massage though

I have previously heard that the act of having sex is actually supposed to be good for a bad back though, something to do with the pelvic thrusting