cappy: I'm not an expert
I'm pretty comfortable with FMLA.
18. 0 29 C.F.R. §§ 825.114(a)(1),(2). The FMLA regulations
explain that "inpatient care" means at least an overnight stay at a
health care facility, and includes any related period of incapacity
or subsequent treatment relating back to the inpatient care. Id. at
§ 825.114(a)(1). "Continuing treatment by a health care provider"
covers five situations: (1) incapacity of more than three consecutive
calendar days that involves either (a) treatment two or more times by
a health care provider (or under the direction or orders of a health
care provider), or (b) treatment by a health care provider on at least
one occasion resulting in a regimen of continuing treatment under the
supervision of the health care provider; (2) any period of incapacity
due to pregnancy, or for prenatal care; (3) any period of incapacity
or treatment due to a chronic serious health condition requiring
periodic visits for treatment, including episodic conditions such as
asthma, diabetes, and epilepsy; (4) a period of incapacity which is
permanent or long-term due to a condition for which treatment may not
be effective, although the individual is under the continuing
supervision of a health care provider (e.g., Alzheimer's, severe
stroke, or the terminal stages of a disease); and (5) any period of
absence to receive multiple treatments from a health care provider
(or on orders or referral from a health care provider) for restorative
surgery or for a condition that would likely result in an absence of
more than three consecutive calendar days without treatment (e.g.,
cancer (chemotherapy, radiation), severe arthritis (physical therapy),
kidney disease (dialysis)). Id. at § 825.114 (a)(2).
http://www.eeoc.gov/policy/docs/fmlaada.html
So, without taking things to the extreme: a pregnant person going to a prenatal care appointment with a healtch care profider, a pregnant person with pregnancy induced hypertension put on bed rest are entitled to the same FMLA protections. Additionally, be aware that a person who is pregnant and who becomes ill with, say, strep throat, may be treated differently than a non-pregnant individual because the infection may be viewed as a serious health condition because the patient is pregnant and therefore treated more conservatively (e.g., bed rest for a week, constituting incapacity for more than 3 days). So, although the mere fact of being pregnant is not in and of itself a serious health condition, and I didn't mean for it to be taken so literally, pretty much everything connected with prenatal care (my original statement) is covered and, moreover, many kinds of common illnesses become serious health conditions when they afflict a pregnant person because the standard of care will be more conservative.
There is nothing wrong with asking for a cert when someone goes to a pre-natal check up because that is time that should be counted against their FMLA alotment.