Digital test?

Lacey • I am 33. Married for Eight years. I am a dental hygienist. My husband works in industrial mechanics. We have a 2 year old little girl and are trying for baby #2
Was due for af on the thirteenth and no sign. Test with clearblue digital yesterday and it was negative. I heard that the digital test requires more hcg. I bought first response today and I really want to test right now but should I just wait for fmu? I'm really anxious. If I test tonight how long should I hold my pee before I test.