23 weeks and seeeerious back/stomach “ache”

Ok, so I’m 23 weeks with my second and the pain down one side of my mid/lower back and mostly round my right side of my stomach is enough to make me feel slightly nauseous. It’s been there all day, I’ve taken paracetamol, had a hot shower, hot bath, relaxed WHATS GOING ON. Even my bits feel bruised like I’m on a period? That’s the only way to describe it like I feel like I’m ok a period. Because obviously I’ve given birth before and I know the actual pain that’s pain uno, I feel like I could handle more before getting it checked...

but I’m also like? With my first would I have gone and got it checked? Should I?

Babies moving lots movements not an issue currently... any ideas? Anyone experienced this before? 🤷🏽‍♀️🤔