What to expect

Sa
I'm going to a diagnostic type appointment at my OBGYN on Thursday and I was wondering if anyone could give me a head's up what to expect? I've lost two pregnancies in succession before 7 weeks so my OBGYN made me an appt to see her and "look for reasons" why I haven't been able to have a healthy pregnancy. I'm guessing a blood test... Anything else? Hubs has to work should I ask him to come with if he can or is it no big deal?