Didn't you have a single BM today? Well then the body is taking time to adapt to the IF#1. You should increase intake by 1 cap tonight, i'm sure you will have better results that today. A good idea would be to add some psyllium/ fiber to your diet tonight to aid bowel tomorrow. Do NOT jump onto liver cleanse just yet: the key here is persistence & figuring out the right dose, you'll be surprised then by the results. Most positive results are observed once we move to IF#2, so don't give up without trying IF#2.
BTW I am on the fifth day or IF#2. My dose for IF#1 was 4 caps. I am yet to see any ropes or MP yet, i do see some bit of mucous alongside fecal matter.