Ok it goes like this,they will ask you a shed load of questions ,have you or your family ever suffered from ......then a long list of ailments.They will then check out your heart and lungs,take your temperature and Blood pressure.You next get to pee in a jar,which they will test for a range of things.You will have an eye test,i.e read the words off the wall chart,then a colour blindness test,called the Ishihara test after a Japanese Gent who devised it.you will be asked to drop your trollies and then the Dr will gently(one hopes)cups your bollocks and asks you to cough.iF your cobblers move all is well.As for injection the RN will not subject you to any untill you are in the RN,no point wasting money at this stage if you fail somewhere along the line.And yes you are right,sticking things in your genitals is painfull as well as VERY disturbing.Might i suggest you stick your knee in you mates Genitals and conduct a bit of Pain Research?