Doubts 2/3s of the way through the wait

I just posted three times to finish up everything from our trip, but now wanted to quickly update everyone on how I am feeling and how we've begun to doubt this whole thing worked.

[warning ... there may be too much information for some below ... but I don't know how to explain the situation without giving a few gory details ... sorry]

Unfortunately, I have had a period the past few days so we are very discouraged and fear the worst. Everything went so perfectly and our numbers were all above our expectations on the trip so we were feeling so positive, and we're still trying not to completely give up. I've had multiple conversations with my nurse at the clinic here in Charlotte and she says bleeding doesn't have to mean I've lost the little guys and that one of the drugs I am taking often causes bleeding. She also thought it was unusual to have a period so soon after embryo transfer so it could be from implantation. I feel like she has seen more of these cases than I have so wouldn't give me false hope unless she really thought there was a chance I'm pregnant. But based on extensive reading online - it sure seems more like a period than implantation bleeding.

So I'm trying to stay upbeat and positive - and I've been  resting. I even called in sick to work Friday. We spent a couple hours yesterday having both our cars worked on at the VW dealer, and while we were there we test drove a Routan, which is a minivan, so definitely a car we'd only buy if we had twins. I've also wasted hours completely planned out the nursery (with two cribs) and picked out the furniture and accessories. So we are trying to act like its all ok and proceeding according to plan. But to be honest we have our doubts.

We'll find out for sure on Thursday when I go in for a blood test. So prepare yourselves for bad news, because that is what we are doing.