2nd pregnancy, and hormones are ruining my marriage.

My husband and I have been married for almost 6 years (together for 9) I'm 24 and we already have a wonderful son who is turning 4 soon. I am 12 weeks pregnant and this time is a lot harder than the last. I am just dead in the morning, which makes caring for my son difficult. I feel like a bad mother, even though he can get his own snack and entertain himself, after many attempts to get me out of bed one morning he actually ask me if I hated him! He is my world and I can't stand how this pregnancy is taking me over, with the fetigue and the hormones.

Which brings me to my other concern, my hormones are running rampant. First I was worried something was wrong with the baby, then I thought my husband was or wanted to cheat on me, because he has never been ultra into intimacy, but lately he has been completely uninterested in me. I told him about how I felt and he dismissed it, telling me he was just looking out for me. Recently I have been beside myself with feelings of sorrow, I can't help but think about how I would feel if I were to lose either my husband or my son. I cry uncontrollably.

And just this morning I woke up early like usual having to relieve pregnancy discomforts, but I found myself once again consumed by the thought my husband was hidding something from me. It nagged and nagged and I finally decided I needed to look through his phone. For many reasons I have had suspicions, so I got his phone (unstealth-like) he realized...when I came back he asked about it, I told him I just needed to see it, he replys "so did I pass the test?" obviously annoyed.

I feel terrible and wretched. I wish I didn't feel these ways but I can't help it, and it's pushing him away.
If you have insight, please try and explain this to me.