Welcome to our Forum. The ulcers you describe are not related to your sexual contact 4 months ago. The only STD that might cause the sort of recurring ulcers that you describe is herpes and your symptoms do not fit with HSV. They occurred for the first time too long after exposure to be HSV, they have been localized to the inside of your mouth and HSV lesions involve the lips as well as the inside of the mouth (in fact, while it is typical for HSV to recur outside of the mouth, it is less common to occur inside), and your initial outbreak did not last long enough to suggest HSV.
Rather, what you do describe is a problem called "aphous ulcers" which are common within the mouth and which tend to recur, particularly when people get other illnesses such as colds. the precise cause of aphous ulcers is unknown but they are not due to an STD. There are also other dermatologic processes which can cause recurring ulcerations within the mouth but aphous ulcers are far and away the most common cause.
My advice is first to be confident that these are not an STD and are not due to your encounter 4 months ago. If they continue to be problematic for you I would discuss their management with a dermatologist.
I hope my comments are helpful. EWH
Hi Dr Hook,
Thanks very much for your answer.
Appreciate it.
Regards,
Ruchi