2 Week indicator test showing different results!

Louise
I did a clear blue week indicator test on Monday and it said 'pregnant 2-3 weeks' then I did one again today and it said 'pregnant 1-2 weeks' I did your test after lunch.... Maybe that's why it says a different week? Hope it doesn't mean anything is wrong! Going to see midwife on Monday but I'm now worried! Anyone else has this????