I do not know how Germany works but in the USA, if a woman has a kid and sponges off the government, the US government suddenly becomes extra motivated to make the dad pay. THEN they count the child support received as part of the woman's income (thereby lowering her chance of sponging off the GOVT some more).
Problem is - he wanted you to get an abortion. Then he didn't want you to tell anyone who the father was. You do realize he is going to dodge child support as much as possible. EVENTUALLY it will catch up to him but it could take years unless he decides to be responsible (which is unlikely since he is a loser.)
Always remember that YOU are the most important person in your world.