I ovulated on the 14th and had unprotected sex on the 11th, 13th and 14th. On the 15th my breasts became very tender with mild cramping and mild nausea. I am 12dpo and still am experiencing the same symptoms. I am due my period in 2 days. I took a pregnancy test on the 24th in which it came back Negative, I am hoping it was just because I tested to early. 3 days ago I noticed my areolas had become bigger and slightly darker, is there a possibility that I could be pregnant? First time TTC. All help would be helpful, thank you.