2 positive Test 4 days later 2 Negatives And Same Day As Negative Period Starts!

Could Anyone Tell Me What Might Be Going On With Me.. My Period Was 4 Days Late So I Tested, Both Test Was Positive, Started Cramping 4 Days Later Spotting So I Decided To Test Again Because Of The Blood And Both Test Was Negative & Same Day As Negative Test Period Came On With A Few Clots! Any ideas?