Singer Tweet is in the hospital with blood clots in her lungs and right arm. Missy Elliot alerted her 1.2 million followers to the news, saying, “Sending prayers up for my sis @Tweet_ who has blood clots in both lungs… We are asking for your prayers for healing… Amen.” Tweet’s longtime boyfriend, Baltimore pastor Jamal Bryant, echoed similar sentiments, saying, “I need your prayers for @Tweet_ She’s been admitted in hospital for blood clots in both lungs & right arm! Doctors can’t trace it but God is a healer! Prayer still works…” The R&B star, 46, is best known for her 2002 hit “Oops (Oh My).” She released albums in…