Thanks everyone!
Ah thanks @glowingtwig that would be great, fed up googling and scaring myself!
EPU called back, she was really nice and just said that spotting in weeks 5-6 is very common and usually implantation, she said only worry if its period style bleeding and this was not!
Still got brown cm but that's all it appears to be! Almost feels like my nausea has increased a bit as well but maybe just nerves!
She basically said I was right to phone but just to monitor it and come in on 1st April as planned, howevee, if anything else happens then just give them a ring back!
Xx