Has me thinking

So Wednesday my fiance and I had intercourse Thursday morning I went to use the restroom and when I whiped there was pink spotting and the toilte paper I haven't had and spotting after Thursday and it was just that one time only AF is not expected till the 21 of august. I have had one miscarriage and after that my cycle took a while to become regular again I had some spotting in between cycles but it's been a while so I don't know if I should be conserded.