Vaginal soreness and pain

Ashley • Im 23, bin married almost 3 years now. I have a year old son and am pregnant with my second. A little girl this time named Lelyana. My son will he 16 months old when she is born.
Im 22w 4d and have bin very active on my feet the past 2 weeks and my lady bits are really sore and sometimes i have random shooting pains down there. Anyone know what that means? Should i be concerned or just shrug it off..