Clearblue advanced digital ovulation

I’ve been testing since my period ended with clearblue advanced digital with first morning urine. I was getting the low result for the first few days, however I decided to test again the afternoon yesterday and I got the flashing smiley. I tested again this morning and it’s flashing again. Do you think I may have made it faulty by testing twice in the one day? I tried a strip test there now along with it and it was very much negative. Help!!!!!