Right ladies need advice I've been having period pains for days and now it's turned into crippling pain but constant and…

Right ladies need advice I've been having period pains for days and now it's turned into crippling pain but constant and I had the most fullness in my lower belly and I've got home and my leggings are wet and so are knickers I don't if it's discharge/sweat or waters as I was driving and all I could think about was getting home before my stomach felt like it was going to explode I don't feel like another trip down to delivery suite again what's everyone advice how to know what's going on?