Possible implantation bleed..

SDPxx

So I haven’t had AF for a couple of months which is normal for me.. haven’t really been tracking or trying since summer last year. Last night I noticed abit of spotting but not at all so I thought oh af has shown her face! and then the tiniest tiniest bit this morning but nothing since. I’m getting mild twinges in my tummy and got terrible back ache which started yesterday. So I’m hoping this is a good thing.. what do you girls think could this be implantation?