is 15mIU's a sensitve enough test to test early or are frer's better???

[babygirl89]

i got 15mIu's pregnancy test's but they where cheap is 15mIu's very sensitive or are first response or clearblue more sensitive?? sorry im new to all this

oh and does anyone know when you can start testing with a 15mIU's pregnancy test it say's 4 day's before your period is due but kinda wanted to test before that.

 

[babygirl89]

anyone??