不放心中国有些不合格专家的解释，查了查国外的，Is it safe to have an X-ray during pregnancy?
Written for BabyCentre UK
The BabyCentre Editorial Team answers:
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It depends on the type of X-ray you need and exactly how much radiation you're going to be exposed to. The greater your exposure to radiation, the greater the risk to your baby. Most diagnostic X-rays (dental X-rays, for example) do not expose the fetus to high enough levels of radiation to cause a problem. While fetal exposure over 10 rads (the unit of measurement for absorbed radiation) has been shown to increase the risks for learning disabilities and eye abnormalities, you needn't worry. It's rare for a diagnostic X-ray to exceed 5 rads.
For example, the amount of radiation that a baby gets from a mother's dental X-ray is only 0.01 millirad. Since a rad is equal to 1,000 millirads, one would have to have 100,000 dental X-rays for the baby to receive just one rad. Other estimated fetal doses are 60 millirads for a chest X-ray, 290 millirads for an abdominal X-ray, and 800 millirads for a computerised tomographic (CT) scan. For perspective, during the normal course of pregnancy your baby is exposed to about 100 millirads of natural radiation from the sun and earth.
Although the risk from diagnostic X-rays is low, experts often recommend that women postpone getting unnecessary X-rays until after giving birth. However, if your doctor feels X-rays are needed for your particular medical situation, it may ease your mind to know that the amount of radiation your baby will receive will most likely be well within the safe range. On the day of the test, make sure the radiographer knows that you are pregnant so she can properly shield you.
If you're around radiation at work, talk to your supervisor about ways to reduce or eliminate your exposure. You may want to discuss the possibility of wearing a special kind of film badge that monitors the amount of radiation you receive. Such badges can be analysed periodically to make sure you and the baby are safe. If you're concerned that your employer isn't addressing safety issues, contact the Health and Safety Executive, the government agency responsible for overseeing safety in the workplace.
If you were receiving radiation for cancer therapy before learning you were pregnant, talk to your oncologist about the amount of radiation your baby may have received, and ask for a referral to a genetic counsellor and for a detailed ultrasound of the baby.
http://www.babycenter.com.au/pregnancy/isitsafeto/xrayduringpregexpert/
found out I'm pregnant after I had an X-ray. What should I do now?
You don't really need to do anything. The risk to your baby from radiation is so small that most doctors would treat your pregnancy just like any other pregnancy. If you're really worried about your baby's risk, a radiation physicist can figure out exactly how much radiation your baby has been exposed to. Usually, an unborn baby shouldn't be exposed to more than 5 rad. Because most x-rays cause much less radiation than this, talk with your doctor to see if it will even help to find out the exact number of rads your baby was exposed to.
更多解释：
http://familydoctor.org/online/famdocen/home/women/pregnancy/fetal/373.html
既然LZ现在经济状况不佳，赶紧去吧，从头来。你还年轻，要孩子的机会有的是，35岁前都不算大龄，偶40生了小二，现在4岁了聪明漂亮，质量好着呢
过谦了.
看楼主的年龄，如果现在不要，恐怕以后想要就难了。
