How early can you feel implantation and pregnancy symptoms from?

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I’m one of these people who notices symptoms and get symptoms for practically everything. But how early can you actually feel symptoms of implantation and early pregnancy from? I’ve been having symptoms lately of what they say to be implantation and early pregnancy symptoms and it’s only nearly been 2 weeks.

aw man, my symptoms started about 10dpo. Take a pregnancy test. if you’re pregnant, you’ll get a faint line, like i did.
I had no idea i was pregnant yet hadn’t even missed a period and i had really bad lower back cramps and a little implantation bleeding… so before the 3-4 weeks i felt it…
well every women is different but as i remember my i had my implantation in one or 2 weeks after my period ended n the symptom was a drop of blood just once and last only for one day…n started having sore breast from Right then but actually what we call pregnancy symptoms like nausea and tiredness i started them when i was 5 weeks pregnant…but the very first symptom of my pregnancy was sore breast and mood swings that i started as soon i conceived.good luck.