have you missed a period?
the only way you'd know if you were pregnant, for sure, is if you take a test. a home pregnancy test works best if used the first day of your missed period or any day after that. there are tests that work earlier, but they might not yield an accurate result since your body, if you are pregnant, isn't producing enough of the pregnancy hormone hCG.
i'm 9-weeks pregnant. and before taking a home pregnancy test, i had next to no symptoms. even now, my symptoms aren't major.
if you think you might be pregnant or feel there is a chance you could be, you might be fooling your body into acting the way a pregnant woman's does. i would say wait until your period comes or doesn't come & take a test.
good luck.