Boy or girl theory

So I’m 15 weeks pregnant and I’ve been asked numerous times whether I think it’s a boy or a girl I’m really excited to find out I do have a 9 yr old son so I’m kinda hoping it’s a girl but I kinda want another boy. Either way I’m just happy to know the baby is healthy and no complications so far...... so there’s a theory I’ve heard that when you ovulate from the left it’s more likely for it to be a girl and when you ovulate from the right it’s more likely a my question is..... has anyone ever paid attention to this theory and has it been spot on with their pregnancy? I sadly can’t remember what side I ovulated when I had my son so I can’t remember but maybe any recent mother’s or mother’s to be remember????