feeling fat

Just feeling down this weekend. I used to be so tiny in High School I was about 110 lbs and I'm 5' tall. When I had my first child I was around 130 lbs and gt up to 175 lbs when I was pregnant. I have not been able to get below 140-150 after having him and I was just starting to feel comfortable in my skin again but everytime I look at pictures I look way fatter then I feel. I'm so happy to be pregnant again because we were trying to concieve but once I found out we were I stopped working out because I was scared of miscarrying. I eat healthy except for fast food occasionally and I just can't imagine depriving myself from sweets and fast food once in a while as a treat. I feel like the only way for me to look how I want to look would be to completely starve myself which is not an option being pregnant now. I'm so scared of gaining to much weight again. I really want to stay healthy this pregnancy so that losing the baby weight will be easy after. It is just so aggrivating seeing some people who don't excersize and eat like **** that are so skinny. I am muscular and thick but have some fat. I;m just so depressed about my weight and angry at the world for making me feel like I should look a certain way. I look in the mirror some days and feel like I look good naked but I put clothes on and it looks bad or look at pictures and I feel so huge that I can't believe no one has said anything to me. I eat healthy and exercise so I don't understand why it is so hard for me to get to a weight I am happy with. :(