It could be thrush the first time I had it I felt like everything downstairs was on fire and I did get it again when I was about 14 weeks. Were more susceptible to it during pregnancy. GP took a look and prescribed me some cream and a pessary sorted it right out and I've not had another infection since
I have had this and it was very uncomfortable. Not suggesting it was the same thing but no signs of thrush or uti. It did clear on its own but at the time frustrating. Could just be changes in hormones / pregnancy in general. Cool showers and cotton underwear will help!
See a GP who can take a proper look at the skin 👍