Severe Cramps

Jessica
I am 26 weeks pregnant, and every morning when I wake up, I have severe cramps in my lower abdomen. I know some cramps are normal, but these cramps prevent me from standing up straight or walking. I also get a full but strong pain in my lower abdomen when I pee no matter what time of day it is. 
Obviously, I am going to talk to my doctor about all of this and I'm not asking for medical advice/counsel. But I would love to know--- have any of you experienced this before? What was your diagnosis? 
I've never had a UTI before so I don't know what they feel like, but I know they are common in pregnancy. For those of you who have had UTIs, does this sound similar to what you went through?