Hi, I Had One Small Limp On My Virgina Area

Hi, I had one small limp on my virgina area one week ago nd it was abit sore, I put cream on it nd now it's very small But now on t other side I hav notice a large lump it not itchy jst very hard nd a little sore. It's over 3 months since iv slept with anyone. Iv made an appointment for the clinic. I'm not Sure how lng it takes after intercourse for an std to show. Getting worried now.