Braxton Hicks Question #1000

I know there's more than enough questions about braxton hicks. But I'm so confused LOL some people say its tightening in your lady bits (I'm assuming cervix????) Others say its across your belly (uterus???)

Some say it can happen in the 2nd trimstest others say 3rd is way more likely 😩 I'm so confused!!

Over the last few days (I'm 22w4d) I get some uncomfortable tighening in my belly, and a little pain in my lower back, then it relaxes. Sometimes the baby will kick right after, sometimes it makes me need to pee. It usually happens when I'm laying down.

It makes me feel like I'm really full almost or like I've been doing non stop crunches.

Braxton hicks or just some random pains?