fuller boobs, sore

for the past week my boobs have been noticeably bigger/rounder/fuller. They are sore to the touch and hate even wearing a bra. I'm not close to getting my period. according to this app period is still 11 days away. idk when I ovulated, I'm not tracking. other symptoms have been a lot of creamy cm and constant headache for the past 2 days. me and hubby are trying to save for a house right now, not wanting to have another baby for another 2 years or so. but do these sound like pregnancy symptoms? thanks for your help ladies.