Do you have to go to the doctor for a miscarriage?

I’ve never had a miscarriage before. This is my second pregnancy, I am 4 weeks and 3 days. It was confirmed through a blood test from my doctor on Friday, my levels were 11. I had gotten positive FRERs at home, even on Friday. Now I’m bleeding and getting negative tests with nasty cramps. Should I go to a doctor even if I’m pretty sure it’s a miscarriage? 😕