Really close together

Please someone tell me what you think. I got off birth control in March and got my period the same month but didn’t ovulate. I started ovulating in August, but the thing is literally a day or two after I ovulate, I’ll get my period, is that normal? Also, does this mean I can’t get pregnant? How would it even work because if the egg is released and awaiting the sperm, fertilization takes a while so could I end up getting pregnant and still having my period because how close the two are? I feel like it would be too early because it’s a day, for my body to realize that the sperm is meeting the egg and it stop my period.