How early can you have pregnancy symptoms?

My period is not due for a little under 2 weeks but I'm crying at the drop of a hat. I mean about EVERYTHING. I atleast cry once a day now and i also continue to get nauseous everyday. It's been for about a week or so. Idk if it's stress or what? And i can never really tell judging by my periods cuz... show more My period is not due for a little under 2 weeks but I'm crying at the drop of a hat. I mean about EVERYTHING. I atleast cry once a day now and i also continue to get nauseous everyday. It's been for about a week or so. Idk if it's stress or what? And i can never really tell judging by my periods cuz they are a tad irregular. Last one only lasted 2 days and was heavy. But they are always different in flo and semi different in how long they last, etc. But the nausea from stress, i can understand. However i never cry and now I'm crying over a ridiculous amount of things and stupid reasons lol idk help?
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