Too soon?

My babygirl was born October 3rd and my hubby got 3 weeks off from work to help. We just found out that he has to go to a Work intervention for a whole week in Las Vegas at the end of this month. I feel upset and don’t know how I will do it alone with a newborn. What would you mamas do & how would you talk yourself into knowing you can handle it? I feel like I’m overreacting and my hormones are getting the best of me but I feel like i will lose my mind especially at nighttime :(

I’m a FTM if that makes any difference