Hi Anisha, Why do you women get into so many problems, OK first you need to be straight with your future husband, try having a friendly discussion with on past sexual experiences that you have both had, and see how that pans out, but I would if I was you, get to STD clinic and just get tested, and if your future husband has had some sexual experiences then ask him to get tested as well, you could say its for health resons as some STDs hide.
Good Luck
if you didn't use protection and here i mean condom you might have it if he had it ... i think you should be tested