Helpp...not a waterfall anymore. 😞😞

Help ...I've been on birth control for almost 2 years now and I've noticed I don't get wet like I used to anymore like it's non existent. and it's gotten to the point where my boyfriend noticed and he feels like I'm not sexually attracted to him and he gets upset (which is totally not the case)cuz before i was on bc we had sex all the time but we used condoms.. How can I naturally fix this problem .