Does anybody know how miscarriage works? My lona got pregnant for the first time but I got a miscarriage, then i decided to test. I loaded my save in various stages of the pregnancy but all of them (I tried like 30 times) led to a miscarriage. I even went back to the begining of the pregnancy and did nothing other than eat and sleep at the inn and I still got a miscarriage.
Does every pregnancy has a % of being an unnavoidable miscariage? Does the father's race impact on it?
I searched the wiki but it does not even mention miscarriages at all.
I couldn't find any hard info on this, but after a few hours of testing I'm pretty sure I have a good grasp on how this works. Basically, there's a 'fetus health' parameter that's initially hidden. For it to show up on the Main Stats page Lona must learn she's pregnant (visit Elise for a test, also Lona can figure out the cause of her 'morning sickness' on her own, but only on second and subsequent pregnancies).
Fetus health drops from any stamina loss, and regenerates on day/night cycle, same as Lona's own health. The higher your food meter, the more health is regenerated. So all you really need to do to avoid miscarriage is keep Lona well fed and not abuse the 'rest' button to regenerate stamina while on a local map, because that doesn't pass time letting you expend massive amounts of stamina within a single regeneration cycle.
You can also use Noer Tea to regenerate fetus health but you shouldn't really need it if you don't massively overspend stamina.
Also, while 'fetus health' stat is still hidden, frequent vomiting (like every couple of minutes) works as a warning sign that it's dangerously low. If you see that, drop whatever you're doing and rest for a day or two, then rush to Elise for a test.
UPD: sorry, I didn't initially notice the part where you say you tried nothing but resting and still got the same result. Either there's an extra hidden factor at work that I don't know of, or even at your earliest save point fetus health was already very low. Since any stamina loss at all decreases fetus health a little bit, in theory even something like going to the bathroom can push you over the edge.
UPD2: I also had a theory at some point that 'cleaning privates' helps reduce fetus health loss but didn't thoroughly test it because in the end it all seemed to just be tied to stamina use alone. You may want to try that for science.