Two weeks is still so early. Be kind to yourself. It's been 5 weeks tomorrow that I had my precious Daisy put to sleep. Yesterday was the 1st day that I didn't cry myself to sleep. Our relationships with our pets are just as meaningful and close as they are with most of our family members, so our grief is just as intense. I think it's harder for people who live alone. Yes, your tears will eventually subside and you will eventually start to move forward, but don't put so much pressure on yourself to 'be done' with your grieving by a certain time.
ETA: I've never told anyone this, because I was afraid I'd sound like a nutjob, but I'm going to share it with you. We have certain routines necessary to caring for our pets - feeding schedule, potty schedule, getting reading for bed, etc. It was so hard for me to just stop the routine after my Daisy died. One day I was sobbing to my daughter on the phone about how hard it was and she said, "Mom, just continue the routine for awhile. Go ahead and fill her dish at feeding time. Change out her water, fluff her blankets and get her bed ready at night time. Do it until you can face NOT doing it." Well, I took her advice and it really did help. I continued the routine for a couple of weeks and then was able to stop...except for bedtime. I still fix her bed for her every night. I know that eventually I'll be able to let that go, too. But not yet.