3 questions? Help me answer them ladies!

Mackenzie

I already knew I was pregnant 2 weeks ago but I still continue to take tests to make sure my line is getting darker. My 1st appt is this week. The first picture is the first test the last picture is the most recent test. Is it normal for the last test for the control line to be lighter then the pregnant line? Also, I've used the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> for a while to track my periods when I changed it to pregnant it says I'm 6 weeks and 2 days but this <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> app says I'm a couple days behind that? Which one is more accurate? The last date of the end of my period was September 29th. One more thing, what is your symptoms? My boobs are less tender than they were when I first found out I have morning sickness every morning some nausea throughout the day and a lot of bloating but other than that nothing really has changed.