Give it time. You are almost 3 weeks in and I think for me that is when my cravings started getting bad and came out of nowhere. I was going to my mailbox and my neighbor (who was supposed to also quit drinking) had a cooler in his back yard and was drinking beer. All of the sudden I started salivating about how good that beer would taste, and I didn't even drink beer!
You are very strong to resist having alcohol in the house. Keep it up. It does get better. I am 6 months in and rarely have those visceral cravings anymore. If I do, they are brief and dissolve in a matter of minutes.