Hopefully not. I know when it happens to me it nearly makes me drop. I know its painful when I have them to.
I asked my doctor and he said it was normal but I don't think so and I'm scared I might fall one day.
Not sure but I'm sure its ok. I have pains in mine bad as well and my doc said it was sciatica but u having 4 pregnancies already know more than me. Call the doc if it is too much. If u find out for sure please post and let me know.