is labor coming soon?

I'm a FTM and I'm 36 weeks on Tuesday I been very active the past for days walking, doing this ngs around the house went to fair twice spent hours walking around well today my lower belly has been hurting in the lower part he's also dropped some since last night and I can barely walk due to my lower legs are so tender my ankles are swollen and up by my toes I'm so tired and I just feel sick my baby has been moving but not as much today and when he does it makes my cervix get sharp pains in through it is it because I was over active or could labor be starting soon