Uti.. and yeast infection

Please someone help me!!! I got a really bad uti I let it go for a week and then I got antibiotics and god rid of it but then bam I get a yeast infection that irritates it more... it’s been about 5 days I felt better me and my bf have sex today and it burns so bad it’s so irritated it hurts to pee!!! Should I go to the ER I’m in tears