4 positive negative blood

hi i was 5days late on my oeriod on tesday so i did 2 digital tests both was positive so went and brought a clear blue digital that also was positive dateing me at 3-4wks later that day i started to lightly bleed so wednesday morrning i went to the hospital with bleeding of witch was like a light period they done a urine test and that was also psitive and sent me home saying everything was ok later on friday night i went back to the A&E and they did a nother urine test and a blood test witch they came up negative now the bleedings stoped now im confused im booked in t have a scan done wednesday anyway so im still ging to go to see if i can get some answers but was woundering if any1 could help me on here PLEASE ITS DRIVEING ME CRAZY