Every pregnancy is different. With my first I hated my husband and thought I needed counseling, but then vented to my mom about it and then was fine.
With my second child I cried over everything even silly commercials on tv.
With my third child my husband said I always had my dukes up ready to fight. I had the shortest temper and was still struggling greatly, though my son is 35 weeks old, until the other day when I confessed to my aunt that I was having big problems. Now I seem to be doing so much better just because I spoke about it.
And then I have the added issue of being a worrier by nature. I had a tremendous problem for quite a few years of imagining the most horrible scenarios in my mind when I would drift off to sleep. I would imagine terrible things happening to my children or my husband as I was drifting off and that would make me have terrible dreams and then I would worry myself to death about stuff I didn't know was bothering me. I would stress about everything.
I finally started praying every time I realized I was doing it. I prayed for the Lord to wipe out all those negative scenes I was depicting in my mind. I started sleeping better and worrying far less.
Sometimes I still find myself dreaming about terrorist attacks and what I will do...how will I save my children...It really is silly. I gathered up a list of items that I found on the Homeland Security web site. I have discussed with my kids what to do in case of a fire, or emergency. I have talked to them about strangers and what to do if someone tried to take them home with them (that's how I put it so I don't make them crazy with fear). I've done what I think I should to prepare in the only way I know how for terrible things or events and I leave it alone.
I find that as long as I do something that needs to be done for any given situation then at least I've tried to prepare and that eases my mind.
And then finally I have to repeat to myself that somethings I can't do anything about and I have to let it go. I pray the Lord with protect my children and family and home. I ask the Lord to send legions of angels to guard my kids...and that's all I can do. I do my part and then I ask the rest of the Lord.
Now I don't know your religious background...how you feel about God or any of that, but that's how I do it. I hope it helps in some small way.