I'm married, and I need to get laid!

Before we got married, my husband said he wanted sex almost every day. He was interested in trying different things, too. Well, we've been married for almost two years now, and I'm lucky if I get sex twice in a week. He's not willing to try any positions other than missionary, and I've yet to receive oral sex, despite explicitly asking for it (and him agreeing to) multiple times. I'm dying here! Help?