Clearblue easy digital tests not worth it!

Autum
Anyone else having issues with this test? Got 2 blanks on this test after paying $21 for 2 test it should work! Ive had 3 kids ttc #4 now and its such a disappointment! I know how to take a hpt by now so its not my error. Read reviews and they r very mixed. Mostly negative. Wish i had known that before i paid so much! Guess im heading out to get tests that actually work! Been crampy for over a week and nauseous. Food tastes horrible. Need new prenatals cuz the ones i got leaves an even worse taste in my mouth. YUP I think its time to test! Wish me luck!