How do i tell the father of my unborn child

We talked on Monday but now that I text him telling him that we in to talk ASAP twice but no answer yet he kept asking about my health and when's my doctors appointment I told him.....we didn't plan it and I feel a little sorry because his daughter is not even 1 yet.

We have knew one another for almost 2 year. But I really don't find it fair to me either because it takes two to tango... No what should I do? The next thing I was gonna do is visit his house with a letter .....