I absolutely agree with PaLady. You can't let that go without a doctor evaluating you. With diabetes it could be so many things. like an infection. Please please go to the doctor.
And welcome welcome welcome to the forum. We are so glad you are here. Please keep posting and let us get to know you. You will find a lot of knowledgeable and supportive folks here. We all care.
Moderator Chronic Pain
Believe in yourself. Be kind to fellow humans and animals. Take time to smell the flowers and the coffee.
And by all means, when you are down, ask me for help. I will be there.