mixed signals

Hello, I felt weird yesterday so I picked up a first response 6 days before your missed period test. It came with two which I assumed were the same. Took the digital one last night and it said "+ yes". The other one was 1 or 2 lines and I took it this morning and I only had 1 line. Going to buy another on the way home today to hopefully sort this out. Supposed to get my period next week, hopefully I don't! We just had all of our testing done to begin IVF. Trying to remain calm as we have lost a pregnancy about 1 month in before. Just throwing this out there in case anyone has experienced something similar. I don't post often but in a strange place today. 😵