no you dont get your period after you conceive.
your mother did not get her period after she conceived. she bleed but you dont get your period unless you have a very rare thing going on.
the very rare thing she could have had going on?
having two uteruses. or something like that. if she had it...she would have known
its very rare and doubtful she had her period when she was pregnant or that had that.
she bled. simple. you can bleed much like a period...but you do not get a full blown period when pregnant.
why are you trying to figure out when you conceived anyways
How did she have five regular periods?
she did not have five regular periods unless she had a special condition witch once again she would know about it. if she didnt...she bled around the time her period would have been due. it happens to women. but its not a full blown period
Kim1989 is right. Bleeding happens but you can't have your period anymore.