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because when you are pregnant your blood volume doubles so its to see if your heart can handle the extra workload.

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Q: Why do the doctors ask you to take a stress test when you are pregnant?
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Can a blood test tell you if you are pregnant?

Yes a blood test can tell you you are pregnant. That's why to make sure someone is pregnant the go to the doctors and take a blood test for pregnancy.Yes

How do you if someone is pregnant?

Well either take a pregnancy test or go to the doctors.

If you had protected sex could stress from thinking about the chance of pregnancy cause you to miss a period completely?

It's possible for stress to make you miss a period, but it would have to be a lot of stress. If you missed a period, take a home test or go see a doctor to be sure if you are pregnant or not. It is absolutely possible. And it doesn't take an unusual amount of stress to do it either. Do take a test if your period is 6 weeks late, if it's negative, then you will relax and your period will probably come...mine did :) Yes it is very possible. I became very very stressed and worked up because I thought I was pregnant and when I went to the doctors and found out I wasn't I calmed down.

You take a pregnancy test it says you are not pregnant but you still don't have your period after 3 weeks when your period was due?

Take another pregnancy test, if it says your not pregnant then your period will com don't worry late periods could just be a sign of stress.

Your periods are delayed are you pregnant?

If you think that you may be pregnant then take a pregnancy test to determine if you are pregnant or not. Late or missed menstruation does not necessarily mean that you are pregnant, you can miss your period for many reasons including stress or ill health.

Why are stress tests used?

The chemical stress test is used to evaluate the heart.

How do you tell if you're pregnant but on birth control?

Take a pregnancy test. That is the best way to know. Your body can give you fake periods when you are pregnant or you can have a hidden pregnancy where you don't have a bump. The best way to know is to take a pregnancy can buy these or have one at your local doctors.

Im 14 years old and think im pregnant how do you find out?

You find out if your pregnant by buying a pregnancy test in a store or pharmacy. Or you go to the doctors and they take blood or urine to find out.

Why is my period?

it could be due to pregnancy or it could be stress or being very active if you have had sex take a test if your not pregnant wait or ask the doctor

Can you be pregnant and have a false doctors test?

no cuz the test they run r goin 2 b true

If last period was on November 17th 2008 and its now January 5th 2009 could you be pregnant?

Yes, you could be pregnant so it is best to get a test or get tested at your local doctors to see if you are pregnant. Remember missed periods can be caused by a lot of things such as stress, medication and worry. So please make sure you get a test to make sure if you are pregnant you can prepare. I hope this helps

I'd like to know if i am pregnant or not I'm 3 weeks late of my period and it was my first time doing this does that tell me that i am pregnant?

You should take a pregnancy test. If your period is late and you have had unprotected sex, you could very likely be pregnant. Sometimes, stress can lead to a delayed or irregular period. If you are stressing that you may be pregnant, you, yourself could be causing yourself the stress therefore delaying your period. Your best bet is to take a pregnancy test, even if the sex was protected.