People are asking you what makes you angry or sad because they do not UNDERSTAND MI at all. They are trying to be kind, but don't get it. Because if you answer XYZ makes me angry/sad, then they can verbally tell you how XYZ is minor, and therefore you can control your emotions to match that. Which you can not. If you could, you would have!
When I get an attack, it is totally out of proportion to the actual trigger. Like you said - a child waking, a door slamming, whatever... a "normal" person registers the sound, rolls over and falls back to sleep. In my brain, a chemical reaction is triggered and I end up wide awake and my heart beating like nuts. I can't just say it was a door slamming and roll over. If I could, I would have. And most people who have never been there just can NOT understand it. And my job is not to explain it or prove it to them or anything else. It isn't you job either.
For me sometimes it is sound, sometimes worry - I worry something about DS, which my logical mind can clearly, and at the time, put on the scale of 1 to 10 at a 3. So minor. Yet my thoughts, my heart rate, my tense muscles, my anxiety over it is an 8. Knowing it should be a 3 does not just make it a 3. My logical mind might be enough to pull it down to a 7, but I can not change my whole brain and body to be a 3. Why not? Because the chemicals in my brain, or whatever is the cause, is in charge of the show.
You had a "normal" childhood. But you did have births as trigger events, for whatever reason. Maybe once that is happened, you are more susceptible to attacks in the present. Your brain becomes trained to it. Sort of like your body becomes trained to pregnancy. After your first baby everything firms back up nicely. But after your second, your boobs just produce milk so much faster, and your hips just hang out of shape because it is expecting this state now. After your third, OMG, not going there. OK, that was my experience anyway. I hope the example is clear for you.
Have you done one of the mood charts - you know from manic at the top to depressed at the bottom, plus anxiety level...? Have you done a large one for your whole life? So instead of a row for each day, you have a row for each year? If not, make one. I JUST mine, and it was an eye-opener. I thought "I had a normal childhood...." but as I started looking at the dates and filling it out, a grand pattern emerged.
Wait - I think you should do this - but not now. Wait until you are in a somewhat neutral state. To get more accurate results.