Hoping I’m pregnant

My boobs are extremely sore and I normally don’t get sore boobs before my period. My period is due in 2 days and I took a First response test this morning but it came out negative . My body temp has been out of wack also. I get very hot at random moments. I’ve had two pregnancies before and sore boobs were always my first sign . I hope this is it . What were some of your first signs ?