4 days late, spotting. Is this my BFP

Lucy

So I’m 4 days late.... on what would be my second period after my missed miscarriage...

I took this internet cheapie just and i swear I can see another line can you help me?

Also I started spotting yesterday only very mildly and only once a day... and a little brown discharge today not a lot at all....

what could cause the spotting of this is my BFP??