Maternal & Child Community
Unsure if this is my baby
About This Community:

This patient support community is for discussions relating to breast feeding, childhood disease, colic, child discipline, immunization, lactation, newborn care, post partum depression, Sudden Infant Death Syndrome (SIDS), and special needs children.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

Unsure if this is my baby

My girlfriend and I are expecting our first child.   Her last menstrual cycle was september 4th.  Had our 1st ultrasound on november 2nd which states that she was 8 weeks and 4 days pregnant.  I am just concerned because we had been broke up.  She had sex with another man on july 31st.  Is there anyway possible the ultrasound could have been off by that much?  It would have been off by 4 to 6 weeks???
Related Discussions
5 Comments Post a Comment
Blank
134578_tn?1404951303
Don't worry.  Conception date would have been around September 16th.  The July 31st date has nothing to do with anything.  Ultrasounds, especially at 8 weeks 4 days, are quite accurate, maybe off by a day or two.  (Later in the pregnancy they are less accurate, because babies grow at different rates.  But so early, they can be spot-on to the exact day.  They are never off by 4-6 weeks.)  

Pregnancy is counted from the first day of the last period.  Given an 8w4d count on November 2nd, the expected day of the first day of her last period would be September 2, so everything lines up.  She would have conceived a couple of weeks later than the first day of her last period, so, around the 16th.  If she had a period in early September, she would have also probably had one in early August, meaning that she had two periods after the sex on July 31st.  So what are you worried about?
Blank
Avatar_m_tn
IDK what i'm worried about.  Just trying to make myself feel better I guess.  Thank you.
Blank
Avatar_m_tn
She did have a period in august and september.  But you always hear of those women who have periods while pregnant.  Just makes my mind wonder i guess.
Blank
134578_tn?1404951303
The ultrasound would have said she was 14 weeks pregnant or more if she got pregnant in July.  If the thing that is bothering you is that she had a fling in July, discuss that issue with her separately, but the baby was conceived in mid September.  Good luck!
Blank
1194973_tn?1385507504
Periods aren't possible while pregnant. If she had indeed gotten pregnant in July/early august she would be much further along.
Blank
Post a Comment
To
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
Maternal & Child Community Resources
RSS Expert Activity
233488_tn?1310696703
Blank
New Cannabis Article from NORTH Mag...
Jul 20 by John C Hagan III, MD, FACS, FAAOBlank
242532_tn?1269553979
Blank
3 Reasons Why You are Still Binge E...
Jul 14 by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Emotional Eating: What Your Closet ...
Jul 09 by Roger Gould, M.D.Blank
Top Children's Health Answerers
13167_tn?1327197724
Blank
RockRose
Austin, TX
134578_tn?1404951303
Blank
AnnieBrooke
OR
4268628_tn?1375044776
Blank
Flickan
Monroe, WA
Avatar_f_tn
Blank
arlandonbloom
CO
Avatar_f_tn
Blank
Bsmom09
1527510_tn?1392304944
Blank
Carly1306
United Kingdom