hi i got a show of my period but end up having unprotected sex the same night,,,next day my period came full on and heavy,for 4 days,,i got the implanton in my arm on da 5th day of my period,,but am starting to feel so tired and breast are tender,and feeling a bit sick,could i have early signs of pregnacie just after a week,,what will happen now i got the implant in my arm 5 days later