I had very similar spotting at around that time. It went away and hasn't come back yet. I'm eight weeks today. Here's hoping you have a similar situation. It was very disconcerting.
I haven't told my kids yet. My oldest is ten and my youngest is six. They'd love a sibling, but with what happened last time, I'm being cautious in who I tell.
I don't think taking another HPT would help. It takes a while for the hormones to clear out after a miscarriage. I've had similar spotting issues. I'm still temping, too. You could make an appointment to have your HCG level checked, or...
The spotting seems to have stopped. I have a tiny bit of brown discharge here and there, but nothing aside from that. Now I'm just ridiculously bloated and look three months pregnant already.