Abort or not to abort

My husband and i don't want any more and I just found out I'm pregnant this would be our 5th pregnancy 3rd child I'm scared to get an abortion I don't want to seem selfish but I'm just not sure what I should do I'm just scared of what our parents would think if they found out just not sure yet and I would have gone on birth control but our insurance wasn't very good at the time I'm just scared of making the wrong choice I don't want to regret it