11 weeks feeling disconnected

I am 11 weeks and have had hyper emesis for weeks not, lost 8 pounds cant keep water down at times and work 40 hours a week, got two kids and am exhausted from the nausea & vomiting. I feel so diaconnected and worried for the baby bc I bled from a hematoma at 6 weeks...just feels like I am waiting for bad news at some point. I am kinda just depressed from always feeling bad. I had a mc in march n got pregnant a month after and am worries bc of that too. Just a lot of worry n my hubby is just at a loss on how to comfort me. My ob appt is thursday so i hope it rests my mind. i heard heartbeat at 7 w and am pretty sure its picking up on my home dopplar so why am i so stressed n worried? Other moms have this? I feel nuts