This is my first month trying to concieve. I got my mirena IUD removed on November 17th and I was still spotting each month around my period which was for four days (November 4th-8th) my fiance and I had sex 3 days prior to my birth control removal and 2 days after and I ovulated on the 19th-20th and I've had nausea and cramping super bad . I tested and it was negative I know it's way to early. Any advice? Are these early pregnancy signs?