Is it normal to not be able to go about daily activities at 5wk/7wks pregnant?

Went for my first scan 2 days back. According to the doctor, the size of baby is at wk5 of pregnancy. She said that it is not accurate yet as the scan is not clear. Was told that there were water sacs around, and the chances of miscarriage were very high still. She prescribed me with Dydrogesterone for 4 weeks. These 2 days, I'm feeling so uncomfortable and pale. I cannot go about doing my daily activities at all. I spend most of my time sleeping it away. Is it normal? Should I go for a second opinion check somewhere else?