6 weeks pregnant today and super worry!

Loredana

Ok so I'm worry, I took the digital pregnancy test on Tuesday or Monday and it said pregnant and 3+ weeks. Today I tried again, I've been peeing thought the day a lot, and I went to pee and did the test and now says pregnant and 2-3 weeks, so it went down... is it because maybe I pee so much today? Or should i be worry? I have an ultrasound on Thursday.