Additionally, extra progesterone, which is a central nervous system depressant, contributes to the sleepiness.

If you find that you are really sleepy, try learning to power nap to get through the day.

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Although rare, a few women may continue to cycle throughout their pregnancy.

It may be harder to note a missed or strange period if you experience irregular cycles.

This may be a pregnancy symptom, but it is not necessarily a pregnancy sign.

There are many things that could cause the headaches, including stress.

The truth is that not everyone will experience pregnancy symptoms as expected.

Some women experience none at all while other have temporary ones.

Typically, pregnancy symptoms begin in line with when hormones ramp up and get to levels that start to produce symptoms.

In some cases, this may mean that you experience symptoms before your missed period. It may be confusing, as some symptoms, like headache and bloating, are those you may experience when you're not pregnant.

In this case, a pregnancy test followed by a pelvic exam may be necessary.