Should I ring the hospital ?

I have quite dark yellow brown circles around my eyes, im constantly tired and just want to lie in bed! I feel like I havnt no energy to do anything ! And every morning when I wake up I’m stinging when I pee and I start to cramp! But it goes away once I’m up and about ! I’m 35weeks I know the hospital will most likely ask me to come up and be seen ! But I don’t want to waste my time if it’s just normal pregnancy symptoms .. ALSO I HAVNT REALLY BEEN EATING MUCH! And I feel like I’m drinking ok