Extremely worried help

💜GoofyLemmings💜 • Rainbow 🌈 Due June 2018 ❤💙
Okay so I bought those digital pregnancy tests that show the weeks. Well I've already had blood confirmation and I don't get to see my ob until April 14. But I took one Sunday and it said pregnant 3+ 
Took another one today to just use it up and it says pregnant 2-3. Now I'm starting to freak out if I'm starting to have another miscarriage.
I have cheap wandfo tests and they're all staying dark. Like really dark. 
Could these be faulty tests or is something going wrong. I'm really starting to freak out