Any idea??

Naw
I'm currently 34 weeks and 2 days. I'm having this sensation in my tummy like you ate chilli and having burning sensation and wanna go toilet but when I go toilet it's nth. I've been going toilet for pee literally every hour and this evening I was at my bf's godson house went toilet and ever since I feel wet between my thighs could it be pee as I could have weak bladder cos of the baby? Or sweat as its been getting warmer in UK and plus I got thick thighs. But I'm still having that funny sensation in my tummy? Anyone got any idea what that is or sth I should concern about? I'm first time mum here so I'm lil bit confused and lost. Thank you I advance! xxx