Inflamed cervix but no infection?

Just what the title says - has anyone experienced this? I’m 15 weeks pregnant and I’ve been having some abnormal discharge and just general discomfort for basically my entire pregnancy. I had a UTI and yeast infection early on in my pregnancy. At my last appointment, my OB did a swab to test for BV, yeast infection, STIs, and then we also checked for a UTI. Everything has come back negative and I just wanted to see if anybody has experienced something similar? This is my second pregnancy and I did not have any issues at all with my first so this one has been very different.