Sounds like it may be prelabour! I never had any with Moo, but Buster drove me crazy! It was just like period pain and would come and go frequently in the last few weeks. I even had my mum down and was in the birthing suite another thinking it was all happening! In the end I went into labour at just over 38 weeks, all that prelabour meant I had very quick birth compared to my first, 2 and a bit hours compared to 22

Good luck, hope this is the beginning for you!