I Am Sexually Active And I Clean Regularly.. Me And

I am sexually active and I clean regularly.. Me and my boyfriend have known each other for a lon time and have just recently gotten together. today he said my vagina smelled different.. He said it kind of smelt like blood but it wasn't a bad bad smell... He said before when me and him first got together it smelt normal... Is there something wrong? Do I need to worry that I've gotten something?