Hey there, I'm sorry you're in pain :( I get really bad cramps with back pain and leg pain/numbness, it's no fun at all.
What have you tried so far? Heat is a big thing. I always grab a hot water bottle (I have used three at once on occasion). Put it where it feels most comfortable, wait for it to get cold, refill, repeat.
Pain pills can also help. The more common ones are paracetamol (Panadol) and ibuprofen (Neurofen). They never worked for me, but they might help you, especially with a hot water bottle or heat pack.
If your periods stay really bad, and paracetamol and ibuprofen don't help, then talk to your doctor about it. I've got some prescription pills called Naproxen (I also tried diclofenac). They're similar to ibuprofen, and it doesn't get rid of all the pain for me, but it does take the edge off.
Also, keep track of your periods. If they get worse, then talk to a doctor - periods can be uncomfortable or painful, yes, but they don't have to be absolutely awful.
15 hours, 47 minutes ago