I'm scared and need advice

So my period is due tomorrow and usually before ALL of my period my boobs will get extra heavy and soar a week before I start well this week my boobs where fine, I was fine and literally haven't felt my period coming. Some cramps here and there and then on Saturday I was acting very weird, very loopy not like myself at all and everyone was noticing, also my chest around my heart area had tightened up and hurt real bad as if I had heart burn then went away, also got a little light headed and just feel extra bloated the last few days, well my point is I had sex a day after my "ovulation date" according to glow, my question is has anyone who got a BFP had sore boobs in their previous cycle and then before their BFP didn't have sore boobs before their period? Really not wanting to be pregnant but I don't feel like I'm gonna start my period at all....