I feel so uncomfortable at home?

My son is now living with us instead of at his dads, and started attending college (right down the street from us). I am so happy to have my son at our house. He is well behaved, wakes up on his own. I spend time talking with him, making meals etc. But here's the issue...I get vibes from my husband (his step dad) that he's unhappy with this arrangement, and that it bothers him that I give my son attention. As a result I feel like I am doing something worng, guilty for being happy. I took my daughter shopping yesterday and when I got home husband seemed quitely upset. I feel uncomfortable at home and afraid of upsetting my husband. He goes into these silent moods or makes faces where I can read his displeasure. I am not doing well. Going to counseling. What else should I do to make me feel better about this situation?