I'm asking relation to "don't dive when pregnant rule". I know that is a debatable subject and many people do but the scientific reason is that nitrogen in the blood has affect a Feotus. However if there is a net loss of nitrogen below 6m then one would assume a pregnant person can do shallow dives up to 6m without risk.
I'm looking for a scientific discussion, not comments like "would you risk it" or "it's not your like your messing with".
Years ago, during my undergrad, I wrote a research paper on diving and pregnancy. During my research I found some interesting data that was conducted in retrospect. One of the factors that most people don't think of is the chamber ride (in the case of DCS) and the administration of O2 during treatment. A fetus is highly susceptible to high concentrations of oxygen. Too much exposure can lead to blindness.