Idk what's been going on but my 21/2 year old has been acting a hot mess lately ! Like all he does…

Idk what's been going on but my 21/2 year old has been acting a hot mess lately ! Like all he does is WHINE, CRY,FUSS!! He's never like this! Maybe it's Because I'm almost due?? He's never acted like this? Maybe he's teething?? Growing pains ?? Idk but he's changing and its freaking me out because I'm so close to being due ! And also he's been peeing threw his pull-ups every single night! He wakes up freezing and wet 😖 any suggestions on what other diapers/pull ups to try?? He's huge he's like 40 pounds lol ugh I'm so stressed!!