early morning cramping?

L
Hey ladies, 
  For the past four days, I've been getting pressure AF like cramps if I try to hold my pee very long. There's no burning or anything that suggests UTI and the cramps go and pressure go away after I pee. The confusing thing is, it's just a little pee! I had to get up seven times last night 😕 I'm between 4-6 dpo. Any ideas???