Really need to vent.. So my soon to be ex husband has moved to another state with his girlfriend, we've been separated…

Really need to vent.. So my soon to be ex husband has moved to another state with his girlfriend, we've been separated for 5 months now.. As soon as I found out I was pregnant again, we decided to separate cause he cheated on me with her.. He hasnt done anything for our son & doesn't even spend time with him when he comes back in town, nor does he care about this baby I'm pregnant with now. Would it be wrong if I didnt tell him or send pictures to him when I have this baby? I mean I'm the only one supporting them both financially, physically, mentally and emotionally?