Pregnancy is overwhelming even for women without a history of depression, so I would go as far to say its normal! That said, its definitely worth discussing with your dr or mw so that they can support you through this period. It is a bit of a myth that pg is the happiest time if your life. If you've also had a rough patch of nausea and migraines then you aren't going to be happy all the time as that can make you feel miserable. It may be that this sickness has left you feeling low and tired, but once it passes you might find you feel much less blue. If not there's nothing to feel guilty about. I personally do not enjoy pregnancy. My second pg, while problematic, I'm enjoying more but I'm not someone that radiates happiness. I'm self-conscious and find it hard to embrace pg. I don't feel like I can relax into it until I feel a good outcome is possible (30wks ish). I'm not even someone who is especially anxious. I do think I find it hard to believe that things will be okay and I find it hard that pg forces you to slow down. I also hate being 'public' property and don't like the stares, questions or over friendly tummy rubbers! Do seek advice, as its not nice to feel like this, but its much more common than people would have you believe.