Hey mama, at 33 weeks this is actually pretty normal, quite a few mums I know hit this exact stretch and suddenly the Braxton Hicks ramp up, especially with the rib pressure from baby taking up so much space now. The good news is yours are irregular and painless, which is what you want to see; what matters is that baby's still moving well, which he or she is. That said, rib pain can sometimes come with other things worth ruling out (like how your blood pressure is doing), so it's definitely worth a quick check-in with your doctor or midwife just to be safe, they can confirm it's just positioning and give you peace of mind. In the meantime, the resting and hydrating you're doing are spot on, and some mums also find a pregnancy pillow or adjusting how they sit takes the edge off the rib squeezing. You're doing great, and this phase does pass once baby drops a bit closer to term.