Early BFN but full blown symptoms

Now I know I shouldn’t of testes at 7dpo, but I did this morning. My DS I had BFP at 10dpo... so since I had crazy symptoms I thought I would. Since 6pm last night in and out nausea, very similar to my DS... many other symptoms too...has anyone did an first response test a little early with a BFN and then have a BFP a few days later? I’m going to try to hold off until Saturday or Sunday to test again.