sex to relieve nausea

Is anyone else finding sex to relieve nausea? It's weird to say that my libido has been high because it doesn't feel the same as when I was ovulating. But the only thing that seems to give me total relief from the nausea is sex. Orgasms actually kinda hurt since I got pregnant, so taking care of myself just isn't doing it. When my husband doesn't feel like it (which is about every other time), it just makes me sad and I have to go hide and cry a little. I honestly don't know what to do with myself.