Hi I'm 23 weeks pregnant I'm a I'm a custodian and on my feet a lot I've noticed that when I walk a good distance climb stairs or mop I have contractions they do hurt should I b concerned

I definitely think you should address this with your doctor. You're far enough along that he/she might recommend limiting your activity level. Try and rest as often as possible, putting your feet up, and drink TONS of water. The water will help keep you hydrated and help keep contractions at bay.

Yes, concerned. Climbing stairs or mop these jobs gave hurt depends on your position.