I made tuna salad with shrimp for dinner, its sooo good! But I have a question have any of you…

I made tuna salad with shrimp for dinner, its sooo good! But I have a question have any of you mommies felt sharper pains during your second pregnancy more than your first? I have these sharp shooting pains below my belly button down into my vagina (sorry if its tmi) I called my doctor and I ended up talking to a few nurses who said if I need to, go to L&D. They have been on and off for about a week and once they come last about 15mins straight then go away it's not everyday and I don't know what starts or stops them. I'll be 17 weeks tomorrow.