Early symptoms of pregnancy?

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What are some early symptoms? I’m lowkey nervous about it... I’ve been having like really bad abdominal cramps and constantly feel bloated. But it’s different from my usual period symptoms. I’ve also been really nauseous and dizzy, just overall not feeling well. I have the nexplanon implant in my arm and I’ve always never used condoms with my SO and for the past 3 years have never gotten pregnant idk I’m just concerned.