Feeling Defeated darn blue test

June 7th I lost my baby I've been trying to conceive for 2 years. I was 4 weeks along ... My SO and I waited 2 weeks before we we're intimate again ... 2 in half weeks later I felt the same way I did before ..I still do ...that full felling ,food taste nasty nausea full force .. And the feeling of being pregnant again already so I took a test and I had a faint positive with a blue die test I was so unsure that I took the other 3 over the next few days all the same ... Research would show me that blue test. Cause fading ... To do a red die test and it was neg ... So unsure I got a blood test and it was neg as well ... I know it's to soon after MC but I was hoping it was positive