At 2 weeks I had implantation bleeding

Hello everyone (Friday 14 /17 )at 2 weeks I found out I was pregnant and 1 day after I started bleeding it was pink and light with a little bit of cramps.  On ( Monday 17/17)  I went to the ER they did an ultrasound and blood, urine test they all came up negative and told me I had a miscarriage. I cried but I still feel pregnant. Could the bleeding be implantation bleeding?