Is it normal to itch more when The Monistat cream is leaking out?

I had sex on Friday(No condom) and the next morning i had alot of itching..I assumed it was a yeast infection so Monday I got the Monistat one day cream which I have used before...now this is Thursday and the cream is still leaking out and it seems like the leakage is making the itching worse...HELP! Is this normal...I dont remember it taking this long to come out and I dont remember it still itching 3 days later...