Early stage labour perhaps?

Im 36+6. 2 days ago early hours on monday i was experiencing lower back pain and harsh but bearable period pain feelings which wer irregular but i couldnt get comfortable or sleep because of this. however during the day i was feeling run down and couldnt walk about very well, felt like i had alot of pressure down below. by the afternoon i was so run down i tried going back to sleep or at least try but the pains came back again but stopped late that evening. Could this be a sign of things gettin ready? I have not had any problems since that day.