pregnancy after miscarriage

Alix
Today I found out I had a miscarriage on the 12th and didn't know I had miscarried. They told me my week long of light bleeding was normal and the baby was fine and my hcg levels were doubling so I didn't question it. Except for the 12th I was cramping bad and passed one clot. The doctors still said I was probably fine and didn't question. Well today I got checked out to find my hcg level was now 0.1 and my pregnancy test was now negative. My fiancé and I had sex the entire time I was pregnant til last night because we didn't know I had lost the baby. What are my chances of having conceived again after losing the baby? We have sex like everyday unprotected and he didn't pull out. And now as of today he is pulling out until we are "stable" but we know there is a small chance we got pregnant again after the miscarriage. How likely is that?