Does pregnancy make you feel more jealous?

I went into a massive argument with my husband just because he didn't tell me that in his evening playing card games at work this time there would be a couple of women. I know it's silly and I also work in a company with around 70 young guys, but I often and since I am pregnant feel that I am worthless and not sexy anymore. I ended up crying a lot and feeling even worse...I really don't know what I can do to improve my self-esteem as I always valued myself.