I've missed my period for a month and three weeks then i had my period now i'm showing symptoms of being pregnant but i got three negatives from home?

Not pregnant: Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection. See a doctor to discuss irregular periods.

false-negative : A negative pregnancy test may be false, despite actually being pregnant. Blood testing, or a more accurate test may confirm the pregnancy.