Constant raids but no bad omen

When we opened up our realm we were swarmed by Pilliagrs.
I killed the captain and got bad omen (as expected) but it wore off and the raids kept coming.
ive sorted about 5 raids in the space of 10 minutes.

we are protecting a villiage and made it our base, we have built a huge wall around the village and spent quite a while making eveyrthing nice. I now cant play the game as I simply cant keep up with the amount of raids we are getting.