What should I expect?

I found out last Monday that I'm pregnant with my first baby. The next day I had one single spot of light pink blood. I haven't had any blood since. The spot was roughly the size of a finger stick. After reading the community posts, I honestly got freaked out and called my advice nurse twice. I requested labs. My obgyn responded and felt that labs were not necessary, but is having me come in Wednesday to check on things. Anyone with experience, what should I expect to take place at this appt? And does anyone have success stories who had a similar experience? My test lines are still getting darker and my nausea has been pretty consistent until today. But again, no more bleeding besides that one spot.