why can't I get horny anymore?

Maybe you're getting bored with your sex life? You're not being mentally stimulated enough. Women are more emotional about sex while men are more physical. Try going out and looking at sexy outfits and pick one that you like (that you like not him) then go to a bed and breakfast or on a road trip and a hotel and use the outfit as a surprise. The change of scenery will make for more excitement, the surprise outfit will excite him and he'll want to return the favor. Different ways too, on your knees on a chair, on the floor, the shower, hell one time my wife took it to me on the kid's playset in the backyard! The last thing I would say is stop putting so much emphasis on it. The fire always fades from relationships. That's when much more substantial bonds are formed. At the same time I hope your man has the strength and commitment to endure your temporary cool down. After the baby my wife lost interest in sex and I didn't take it well and almost killed our relationship

It COULD be that. Medications do have side effects. But sex does tend to tone down a bit after awhile. Are you stressed? Perhaps your sex is boring? Are you emotionally satisfied or is something bothering you? Females sex drive usually increase around 35-40ish so it could also be just a weird fluctuation period for you right now.

I also lost my sex drive due to medication. Ask your doctor about the side effects of your meds, and if they can be changed.