Getting dry during intimacy

As a 21yo it’s so frustrating when I’m making love with my man and I begin to dry up. We don’t go for hours, but I can barely go 20-30 minutes without it seeming like my body is telling me I’m done even though I’m not! It’s almost always, and lack of orgasms isn’t my problem. Sometimes I’m extra excited even to the point of him expressing how “wet” I am. Which is a turn on, but then when I’m not that way I feel more self-conscious and doesn’t help me in terms of dryness.

It sucks cuz I know it isn’t as pleasant for him and can hurt him, and myself. I feel like a lot of it is me being self-conscious about my body changing from being pregnant and always being paranoid that I don’t smell good down there (I wash and shower regularly, I’ve just always been paranoid about it). Those two things are always lingering in my mind!

I feel weird thinking I’ll having to incorporate lube into our sex life, I don’t even know how I’d introduce that... but I have no idea what else to do!