Back pain and period cramps but no regular contractions?

Mi
I start having lower back pain and cramps last night. The back pain is awful, but not unbearable. The cramps are come from my lower belly, they are not hurt but sore and feel heavy. 
I managed sleep ok last night, but the pain the persist today. 
I don't have regular contractions or belly tightness. But feel very uncomfortable. 
Ladies, do you think I should concern about it? I'm 25w 2 days. I will have a regular check up next Wednesday. Should I wait until then to see my docotor? They do not open during the weekend. I can only go to the ER if needed. 😫