Q:my friend had her hips pierced too, they put the shorter bars in and they rejected within days
when i got mine done, they put those long ones in and they slowly rejected and went horrible, the bars have been changed now but still, i think the outcome was better than i expected.. so yeah. idk
Just keep your eyes on the lookout for any signs of rejection. The red line of doom across the bar is generally a good place to start.