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.
You should also bring any and all questions you have to your next prenatal visit.
Don't panic if you wonder if every little twinge is something wrong—that's normal.
The same is true if the cramping is accompanied by bleeding.
Missed or Strange Period A missed period is probably one of the most reliable signs of pregnancy (but pregnancy isn't always the reason for a missed period).
This is why you are asked for the first day of your last normal period (LMP).
Although some women will experience implantation bleeding around the time that their period is due, it is usually lighter and/or shorter than their normal period.
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.