When to call your doctor?

I've been having spells of dizziness and feeling lightheaded. At times my fingertips will go numb...I've also been having tightening sensations in my lower abdomen and constant pain that keeps me up at night. I have high blood pressure So I'm not sure if these things are related. Should I call my doctor or just wait until my next appointment in 3 weeks? I'm 17 weeks 2 days currently