Desperately seeking blinking smiley!!

Hello my name is Jenise and this is my second month using clearblue digital advance last month got my blinking smiley face after 4 days went to day 27 still blinking but figured that ship had sailed meaning Peak...Tested not pregnant. So here we are new month and I am on day 7 and keep getting low symbol I am 35 and also have not had a child in 13yrs. I am desperate and so sad any advice would be wonderful could things really have changed to no estrogen in one month ? Thank you JS