Am I crazy?

So I lost my baby Oct 5. Bled on and off up until 2-3 weeks ago. Had unprotected sex this passed Wednesday (Nov 11 I think is the date haha). Have been cramping off and on due to ovulation and have been craving things like crazy and feeling sick and tired. Is it possible that I'm pregnant and I'm having symptoms so soon because my body remembers being pregnant from before?