Last period Jan. 10th.

Okay so I had my daughter in August 2016. I've had a period every other month since I had her. Well my last period was Jan 10th. I took a pregnany test friday night there was a very very faint positive. So I tested saturday with fmu I still had very faint positive. Tested this morning with fmu and big fat negative. Anyone else have this happen? Going to wait and test again Thursday or friday.