Should I let it go?

So about a week ago I woke up out of a dream sweating. It was a dream about how I've still had my periods however I didn't know I was pregnant until it was basically too late for a healthy baby. (I smoke cigarettes and do I lot of things that wouldn't bring a healthy baby in the world if I was uninformed). Ever since I had the dream I can't stop thinking about it. It's possible but unlikely due to my periods. My partner has even said "How aren't you pregnant by now I've came in you so many times". & I was always told growing up "Pay attention to your dreams its your guardian Angel sending you a sign". So I don't know what to do. This dream has been taunting me.