Active baby and vaginal pain

My baby has been kicking really hard lately. She's a little bit big, 60th percentile in weight  so maybe that's why. But she's been active non-stop for about 3 days now and I love feeling her move, but last night she seemed to be under the impression that my cervix was a trampoline. Today I feel "off," a little dizzy and faint, and now am experiencing vaginal pain. I'm 25 weeks today. Does this sound normal?