Do you think I’m pregnant?

Heather

Hi this is my very first time posting.

So my last period started December 27 and ended 31. I swear I had implantation bleeding the 17th and 18th of January. It looked exactly how implantation is described. I am now fixing to be 9 days late. The last pregnancy test I took was last week. They were All negative. When should I test again?