Feeling like something's wrong?

C

I got positive tests this weekend but I would only be estimated to be about 3 weeks along and today I'm nauseated, lightheaded, and having some pretty severe cramping and backaches with random sharp pains along my right side. I haven't had any bleeding or anything though. Anybody have suggestions? I'm struggling to get in to my ob because of insurance changes and referral nonsense. But this definitely does not seem normal for 3 weeks