should I wait or go?

Cynthia • 22 | girl mom 💕
last Tuesday I took a First Response test and it came back positive, Friday I took another test and that came back positive also. so I'm pretty sure I'm pregnant, and from what glow tells me I'm 6 weeks today... I definitely want to go to a clinic and get it confirmed, but I also want to wait a week or 2 atleast so I can get an ultrasound without a problem... I keep getting cramps and I feel like that shouldn't be normal, and I feel nauseous as soon as I eat something but I never vomit... should I wait until 8 weeks? or should I go now?