so confused!!

So today I am 10dpo, I woke up this morning and took a easy @ home test and it was positive so I immediately took a cab digital and it showed up "pregnant"! So of course, I get super excited!! About an hour or 2 later, I decide to take another easy @ home because I just can't believe it and it's so faint it's almost negative! Has this happened to anyone else? From what I understand the digitals take a higher level of HCG to detect pregnancy, so why would I get a negative easy @home that takes less?