Definitely do NOT beat yourself up just because you aren't having the feelings you are "supposed" to have at this time!!! I have been down a similar road - several laparoscopic surgeries, a D&C, blood tests, hormones, removal of endometrial polyps, and a biopsy (which scared the bejeebus outta me as my mom died of endometrial cancer), oh yeah, and 2 miscarriages back-to-back! So I went through all that apparently for nothing. Plus I'll be 39 in like a month. Tick, tick tick.
But I am not sad, and I do not mourn. Apart from an occasional angry cry session here and there, I reacted to these setbacks with a ok-fine-so-what-do-we-do-now attitude. I did not mourn the loss of my empty egg sacs (like you, I thought about the chicken embryos I had dealt with & how some just don't make it to maturity). Like you, I look upon it as a failed chemistry experiment, and you just have to figure out what went wrong and try again.
So we ARE out there, the silent women who do not mourn our miscarriages but instead get a little angry about it and just keep matter-of-factly trying. I think that the stories of devastation seem may like the norm because those are the women who are speaking out publicly about their miscarriages, and the others of us tend to just keep it to ourselves (maybe because we don't feel it's worth talking about?). And it IS way worse if your pregnancy is further advanced, whereas it sounds like you and I were both under 6 weeks (I had nothing to see or hear in either of my miscarriages - just an egg sac).
I understand those fears about being abnormally calm about this (I bawled when I had to put my 21-year old cat down this spring, and am such a tender-heart that I am continually buying sick or injured or freezing birdies just b/c I can't walk away & leave them there). We have hearts full of love and feelings but there is something in us that helps us be strong, and that something says "don't get sad, get up and keep fighting." Nothing at all to be ashamed about or to doubt yourself about. It is part of your strength.
I always get spooked before a general anesthesia procedure as well, so I can understand that. There isn't much that can be said to reassure you that you probably don't know of already. Sometimes, with stuff like that, I like to think of plane crashes. We fear flying because of devastating airline crashes. If you sit at the airport for a few hours and watch planes take off & arrive, you can see that none of them crash. Then think about the planes taking off all day and all night, from every airport in the state, in the region, in the country... yet how many of them actually crash on a given day? The outcome of a crash and its devastation is so terrible that our brains are tempted to overlook just how rare the coutcome is. Knowing that your brain has a tendency to do this might make it easier for you to talk yourself out of your fears. Just a thought, and I hope it helps.