Not all infections are sexually transmitted. If there's a change in the ph of the vagina then thrush can occur and this can cause strange discharge (different smell/creamy). There are a few other things which are possible to occur without sex so i'd pop to your nurse if you're worried and they can tell you. Non of these are anything to worry about and happen to most women at one time or another and are easily treated.
It could also be nothing and you just being very 'aware' of your own smell. I'm afraid the only way to know 100% is by having a health professional help.
"is there a good way to shave without getting razor burn on the top? ... I forgot the name of it...But the top of the vagina lol."
personally I don't think you should shave your pubic hair - have it waxed. It may hurt slightly but it is definately worth it and no problems with stubble rash lol
" I probably spelt that wrong, anyway I heard it was bad to do but are you supposed to after your period or sex?"
you shouldn't do it at any time.