Breasts sore since last cycle

Kayleigh

We are ttc and since my 1 week long period which wasn't all a regular period some days very light I have had swollen, sore breasts and feeling occasionally dizzy and tiny bit nauseated when I eat. Has anyone else had this. I am still 1 week out from the next cycle and so far a negative test. Just wondering what else could cause this. Or if I could still be pregnant and to early to tell. Thank you