So I got my BFP Dec. 23rd at 11:55 p.m. Took a digital at 1:30 a.m. Dec. 24th. It said I was 2-3 weeks. Well I took another digital tonight (so we could show my mom) at like 8:45 and now the digital says 3+ weeks. Why are the weeks jumping within a day?? Would something be wrong me?