I'll try to be brief! We moved into a new house recently and the shower has worked normally. We had a fan and some lights replaced yesterday, showered after and no issues. I just had a 3 minute shower and it suddenly isn't draining at all! I've tried to mop up excess but it's too much to get rid of. I can't remove the trap, it seems sealed in somehow? I do have a bottle of drain unblocker but all I'd be doing is pouring it into a puddle of water :( Please help! Photo of drain attached.