Could I be Pregnant?

Ok I miscarried 8/11. My HCG was 2.3 on 9/12 (so normal) it's been 2 full weeks since and I'm still getting faint positives on the dollar store test and FRER test. I haven't had a cycle yet. Last week I spotted some and had light pinkish discharge early this week but haven't had that again. Could that of been implantation?