Tmi-discharge

Tmi but has anyone ever had a lot of discharge through their pregnancy. I'm currently 21w4d and it's been going on since I was about 3 1/2 - almost 4 months. My doctor gave me pills for yeast infection but never did a test to see what it really was. I also went to the ER 2 days later (for a different issue) and found out I had a uti. I always bring it up to my doctor but she kind of brushes it off. I was told by other women (both pregnant & not pregnant) who use to see the same doctor that that they eventually had to either go to an urgent care or switch doctors that the office cares more about finding drugs than anything else. Should I also change doctors?