Hey mama! Sa 19 weeks, yung mga cramps na yan ay madalas normal lang especially if hindi sila consistent at walang bleeding, pero since this is your second pregnancy kaya alam mo na parang ibang feeling siya kaya mas nakakaalarma talaga! A few of my mum friends experienced random sharp pains in early pregnancy, isang tao said it was ligament stretching, isa naman puro stress-related, pero honestly, better safe than sorry, please check with your OB just to be sure, lalo na since it's different from your first pregnancy and you're having that electric sensation feel, baka may something they need to monitor na lang.