False positive??

Hi ladies, I need some help! I am currently 10 dpo, I took a first response test this morning and got a very faint positive. ( it was a pink line and read with in 2 mins). Then I look a second test in 30 mins to confirm and it was negative.. I tested again this even with a equate signal first because that is all I had left and it was negative too. Do you think this could be a false positive? I am so confused!!