Confused and frustrated..HELP

Tori
Had a mc June 14th and it was very early on..levels were only 205. Started trying right away and now i have had sore boobs for 3 days..nauseated for 4 days and cramping on and off for 4 days. Still no AF. Took a few test and all BFN. Don't know what to think. Don't know if my body is trying to get back to normal or what..can anyone please give me advice??