thanks for using healthcare magic
First let me tell you that most of the time during a cycle , ovulation occurs from only side of ovary i.e. the egg is released only from one side. so if the egg released from the side where the tube is open , fertilization can occur and you can get pregnant.
so having one side tubal blockage dose not make you infertile. getting pregnant in the natural way is very much possible.
I hope i have answered your question satisfactorily.
if u think you might be pregnant get a Urine pregnancy
test kit and check it your self.
good luck and regards