Advice?

Laura • UK
Right so I'm 35+1 and I've been having  (sorry tmi) small amounts of snotty discharge for days and I've just been to the toilet and seen a couple of specs of blood (it's a tiny amount) I thought I might have a cut or something because I've had thrush lately, so i looked around and saw nothing, run the tissue through again and couldn't see anymore blood. Do you think this is something I should be concerned about? Or should I just wait and see if I bleed anymore? I've been having a bit of backache and cramping and quite a few bh's but that's it really. Any advice or reassurance would be great!  Xx