i feel withdrawn...especially from my baby's father...

hi, i'm almost 8 weeks pregnant and i feel down and alone right now even with tons of support around me. the person who supports me the most, my fiance and baby-daddy, has hurt feelings because i don't seem to want to be touched too much or hugged on or in a good mood ever. sex usually sounds disgusting to me right now but occasionally i try to do it anyway so he feels better. i just wonder if this is normal, like will i be like this the whole time? i miss feeling close to my best friend and love of my life, i wish i could make things normal with him again. any advice?