Signs of Labor?

Im 37 weeks exactly. For the past week, I get lightning shocks everyday at least 2-3 times. I leak here and there throughout the day but dr says it’s not from water bag. My lower back hurts all the time. I can’t walk without feeling pressure or getting cramps. They start after 5-7 minutes. I keep hearing that these are signs of labor but Dr says cervix is still closed and that my baby hasn’t dropped. What’s going on? Am I just going to keep experiencing this for 3 more weeks?😅