What is the best kind of navel jewelry is best for a newly pierced belly button?

I am wanting to get my navel piercing back, I had one for six months and it rejected, but I found out why it rejected. So, I was thinking to get it re pierced. But, I wanna no if the circular one is best or the bar bell for the first 6 weeks. &* Also, I have had my last navel ring out for 3 months. Do you think it's healed enough to get re pierced?