If it's smaller than your hand and not blistered you should be ok. Not nice though, I hope it's not too painful for you.
From the NHS site for info:
When to go to hospital
Once you have taken these steps, you'll need to decide whether further medical treatment is necessary.
Go to a hospital accident and emergency (A&E) department for:
large or deep burns bigger than the affected person's hand
burns of any size that cause white or charred skin
burns on the face, hands, arms, feet, legs or genitals that cause blisters
all chemical and electrical burns
Also get medical help straight away if the person with the burn:
has other injuries that need treating
is going into shock – signs include cold, clammy skin, sweating, rapid, shallow breathing, and weakness or dizziness
is pregnant
is over the age of 60
is under the age of 5
has a medical condition, such as heart, lung or liver disease, or diabetes
has a weakened immune system (the body's defence system) – for example, because of HIV or AIDS, or because they're having chemotherapy for cancer
If someone has breathed in smoke or fumes, they should also seek medical attention.
Some symptoms may be delayed, and can include:
coughing
a sore throat
difficulty breathing
singed nasal hair
facial burns
See recovering from burns and scalds for information on how serious burns are treated.