urine is literally running out of me!!! please help!

Karen-Marie
Hi guys. Sorry to be so graphic but I am 5 months pregnant with my second child at the moment and I have a really bad cough. 
Every time I cough (which is constant) I have urine literally running out of me. I don't mean just a leak I mean it's like actually doing a pee. I am wearing the thickest incontinence pads you can buy and within half an hour I have leaked through to my trousers. I am literally at a loss as to what to do. It's so humiliating and I can't leave the house for fear I might wet myself in public. Anyone had similar or any ideas???