My 34 Yr Old Daughter Has Had Several Uti's In

My 34 yr old daughter has had several uti's in the last couple of months. 4 weeks ago she went to her gynocologist and she prescribed the ring which she had problems in the past. 3 weeks ago she started throwing up, having severe pains in her stomach, chilling then getting hot and had no energy. She tried to get into the dr and could not. Last week the same symptoms occured, again she could not get into her dr so I took her to the er on Friday. The er did all the tests they could do without a dr requests and they all came out normal. They tested her for mono and just the basic blood test. Now today she was sent home from work again from throwing up and still has no energy and still could not get into her dr.