Unable to cry

I’m 8.5 weeks pregnant and I’m like emotionless. I used to cry all the time whether I’m happy or sad. Now I’m either tired or mad/irritated. It took me over a year to get pregnant and I always imagined I’d cry at the first ultrasound or get super excited but I was unable to feel anything. I’ve wanted this for so long so I don’t understand my emotions. Why am I unable to feel anything?