If you suspect you have an ingrown hair in the pubic area that has caused a dark spot and feels thick, it is important to monitor the situation. If there are no other symptoms like pain or itching, and the lesion is not increasing in size, you can continue to monitor it. Avoid scratching or trying to remove it. If the situation changes or if you experience any new symptoms, it is recommended to consult a healthcare professional for a proper evaluation. Applying warm compresses may help soften the skin and encourage the hair to come out on its own. If in doubt or if the situation worsens, seeking medical advice is the best course of action.