Negative test a week after getting positive help!!

Hi all, I got a positive pregnancy test last week on a normal test and a digital one I’ll attach photos and yesterday I went to my first doctors appointment to confirm pregnancy and she done a normal strip test and it came back positive with a very very faint line and she did say theirs wasn’t the best. I brushed it off and today I done one just to be sure and it came back negative 😭 I done two strip ones both negative I don’t know what to do now, did anyone ever have this problem? Should I contact my doctor? *first two are last week, last one is today*