What is the ruling on my breaking my fast on this day when birth bleeding started and labor pains began, and do I have to make up for it?

What you saw of blood three days or less before childbirth is considered nifas (definition) (postnatal bleeding). Therefore, your fasting on that day is invalid, and you must make it up. Furthermore, your remaining questions fall under the category of obsessive thoughts, which you should disregard.