no period but negative hpt

TTC Island 2
It is now day 36, which equals to me being 1 week late. I am currently on Colmid and reached round 3 with no success. 
My period is late and no where in site. I did a hpt on 1st day missed, 4th day missed and just now. All negative. 
Anyone else going though this for 1 and anyone else had this and got apositive after? 

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