Can breast tenderness go away in an hour. Like I Just had a high fever and I got a really bad cold.…

Can breast tenderness go away in an hour. Like I Just had a high fever and I got a really bad cold. I called my doctor right away he said I should take aumentin. So I did. But I noticed that 3 hours ago while I was in the shower my breasts felt full but now they dont feel full and don't hurt. Can the symptoms go away that fast and does that indicate miscarriage? Are the symptoms that fast? Like in 2 hours you can go from being pregnant to not being pregnant? #myfirstpost