weird cramps... normal?

Ah
I've been having what feels like gas pains for a while tonight but it's kinda of a cramp/gas combination. It's painful to change positions while laying down. And the cramps are lower. Normally my gas pain is higher. Not sure what's going on. It comes and goes.. Im only 28w4d. Does anybody have an idea of what could be going on? 
I know you're not doctors but it's 10pm where i am and I don't feel like it's urgent enough for me to go the ER.