Anyone experience spotting?

Hushlilbaby • Surprised my hubs on our 1 yr anniversary 9/28 that we are expecting#1 TTC 7mons #birthcenter #naturalbirth #due6/2015
So last night i got up to pee and saw a few drops of blood. I freaked out ran to walmart for preg teats which came back in seconds positive. Could it be implantation bleeding sonce im 4wks1day or could i have miscarried? I didnt sleep all night cause of crying. This is our first baby. Thanks ladies