Serious craving

32 weeks pregnant and for the past 3 weeks now I've got a really big urge to buy a sponge fill it with cold water and suck the water out of it, it can't mean I'm dehydrated because I'm always drinking water, but I do I have this urge to suck water out of a sponge 😍, the amount of times I'm having to stop myself is unreal like. Who else has weird cravings for something lol x