Help, need advice !

Ok so this is probably me just overthinking but lately I’ve been feeling nauseous but not enough to where I throw up and now my boob/chest area has started hurting even going down into my armpit area on one side and they feel a bit swollen/sore. Could that be a sign of pregnancy? I’m only asking because I was a week late two periods ago but then got my period like normal last month ? I even took a test and it came back negative before my last period but now I’ve been feeling like that and idk if there’s something else that could be wrong or if I should test again just to be sure? (A side note, I’ve also been slightly cramping but that’s always happened so I didn’t think much of that)