Period or something else ?!

Megan

Hey everyone i haven’t had my period in over a week I took a couple of the first response pregnancy tests and they came back with a faint positive line I went to get a blood test and they told me it was indeterminate my levels was to high to say I ain’t prego and too low to say I am this morning I went to the bathroom and I was bleeding bright red my stomach and back hurts could this just be my period or should I be worried about miscarriage or ectopic pregnancy ?