Possibly Pregnant?

So for the past 3-4 days now, I have had tender breasts and really swollen (hurts to wear a bra, or even just touching them.), I've had a cold (I've been taking theraflu and it's actually been making me feel worse this past day, I'm ALWAYS tired, even if I get enough sleep. I'm constantly warm, when my husband feels me he says I'm not? I just don't know I've never had a baby so I'm not sure what to expect. I'm still 6 days away till my next period, so I know if I took a test it would come back negative. I just need some advice on how you all felt? My mom swears I am because for all of her 7 kids her first symptoms were sore and tender breasts. And I know it's still pretty early for it all, but I've never had sore breasts before even during my period. (I did take a test it came up negative but like I said I still have about a week before my next period.)