guilty for feeling this way.

So recently my partner done a DNA test on little twin girls that were claimed to be his. I'm not sure what the results are but he gets it back this week. 
He doesn't seem fond of wanting more children, (oops) especially girl children right now. He's 25. He doesn't think they're his for his own personal reasons. He already has a 5 year old daughter he loves to pieces!
However. I am currently pregnant with his first son and I can't help but feel that his oldest and this one will feel left out because of the demands of the twins mother. It's making me angry, upset, lost.. I feel like I will lose him and I just can't get my head around he slept with other women! Maybe I'm overreacting but this seems so chaotic. Three baby mamas is a crowd! 😂