Should I call the doctor or is it normal?

I’m not diabetic. My biological father was diabetic. His mother also had gestational diabetes. Should I worry about that also? I’m entering my 20 weeks of pregnancy. I had a really bad low blood sugar spell earlier and I was with my boyfriend and we were trying as fast as we could and it took us about 20 minutes to find a gas station to get me something. I was about to pass out and shaking and sweating literally my clothes were wet. That was at 2 pm and it’s about 8:30 pm rn and I’m still really shakey and I have ate twice since then and have snacked to make sure my levels were normal. Is this normal or should I have stopped being so shakey by now? Im confused. This has never happened before.