can a girl take 6 months to tell a boy of being pregnant

A female can take however long she needs to be comfortable to tell him she is pregnant, but by that time he should be able to tell that she is pregnant and if he can't then he is not very observant.

She can take as long as she likes but that may not be a good idea. relationships should be based on trust and communication. It is a very big secret to keep and could destroy trust. There may be situations where it is not safe to tell, but if the relationship is to be an ongoing one it needs to be built on openness and trust. The decision about whether to keep the baby is ultimately hers but she should ideally talk to the father about it. It may be a very hard conversation so if you are the girl maybe talk to a trusted adult such as a school counselor or your doctor about it and about how to tell the father. All the best.