Pineapple Juice, is it safe for pregnant women?

Is it okay to drink pineapple juice? I'm 23 weeks & 6 days preggy. I was undergo with Preterm Labor last 6 days due to spotting. Pero medyo okay na kame ni baby ngayon ?, thanks God!? bedrest for 1 month. Nag stop na din yung spotting. Sana mag tuloy-tuloy na.