Positive and Negative Pregnancy Tests

I’m so confused, I’ve never seen this before. We’ve been trying to conceive and a day after missing my period, I took a test which was positive (🎉)! I’m only 5 weeks along and today I felt some cramping and just overall felt very off, so tonight when I got home I decided to take another test to (hopefully reassure myself) everything was ok. Well I ended up with 2 positives and 2 negatives! I’m so confused. Has anyone ever been through this? Thank you in advance!