Firstly, congrats at getting back in the saddle :-) we've Just 'saddled up' too!
Burning- mmmm could also be the chemical that is put on condoms to kill sperm.
A latex allergy seems to come with symptoms that aren't Just localized to the area of contact.
Lube wise- cant recommend highly enough Pjur Woman Bodyglide. It's a silicone lube that doesn't dry out. Bit exxy but you don't need to use much. Available from 'Passionfruit' The sensuality shop in Richmond, Melbourne.
Good luck honey, let us know how it goes.