Help!

Looking for some insight. We’ve been married for years, sex life is fine. I’m currently pregnant and have been muuuuch more interested in sex altogether. Initiating frequently and just really in the mood. Years ago I always felt kind of uncomfortable with him going down on me…but now that I’m so “frisky” I think I’d like to try it again to change up the same few things we’ve been doing. Without him thinking I’m a complete horndoggy, how do I initiate this?