Thank you for the additional information. There are several considerations in this situation.
When someone that had a heart defect that requires repair as a child now has tiredness and leg swelling, the first concern would be that there is heart dysfunction, specifically that the heart is not pumping as strongly as would be expected. However, a VSD that has been repaired as a child typically would not cause heart dysfunction when a young adult.
If you were having any shortness of breath, that would be more of a concern that there was some heart dysfunction.
This level of high blood pressure is not at a level that would cause acute symptoms. High blood pressure is a risk factor for heart disease, but this risk accrues over years, rather than causing acute symptoms. Severe high blood pressure can cause acute symptoms, but this would typically require a blood pressure higher than 180/120.
There are several conditions that would be unrelated to the history of VSD that could be causing the tiredness and leg swelling, such as anemia, liver disease, kidney dysfunction, or various metabolic conditions, such as thyroid disease.
At this point, it would be appropriate to be seen and also have certain diagnostic tests, including a general chemistry profile, blood count, thyroid profile, and depending upon the findings on exam, an echocardiogram.
If I can provide any additional information, please let me know.