goooing mad !!!!!

Abbie • Abstar x
Hey everyone ! 
TTC month 1 ! 
Period due Saturday 13th 
Past few days I've suffered headaches which is quite unusual , been keeping hydrated and I don't suffer migraines. 
Today I did my morning widdled and tested with first response BFN
I wiped and had pink watery blood plus a little bit of brown ! 
My period is always exactly on time never early never late ... so far ! 
Is this blood too much to be implantation bleeding !?? 
Any advice or help would be greatly appreciated xoxoxox