Bleeding

Am 5 weeks 2 days old pregnant.i woke up this morning bleeding but not much.i freaked out thinking i was had a miscarriage.rushed to Walmart and bought the 3 pack first response pregnancy tests..they all came back positive.showing am still pregnant.what do I do?this never happened with my 2 previous pregnancies.should I go the ER?and if I go there what will they do?