I'm also in the 2WW... 5dp3dt, so earlier than you. My beta is next Thursday (Christmas Eve - awesome). In the past I have always taken an HPT, which was great when it was positive, but when it was negative after my last transfer, my entire week was destroyed each time I continued to test and see a negative. And then somehow the phone call wasn't much easier, because some part of you will always hold onto a shred of hope.
This time, although I do *want* to take an HPT, I think I'm better off just waiting for the call. However, my plan is to just let it go to voicemail and to listen to it at home when I'm not alone. As another PP said, if anything, I'll test the same day... though since I have to be at work that day, that is likely also a bad plan.
This wait sucks. Best of luck to you, OP.