Have molluscum contagiosum - 2 so far on leg. contagious? otc medicine? do they need monitoring?

Hmm... pretty unusual to have MC at your age (if the age sown with your ID is accurate). Has the diagnosis been professionally confirmed? Yes, MC is quite contagious, although only with direct contact; you're unlikely to transmit to anyone except by intimate contact (like sex). If diagnosis has been confirmed, speak with your doctor about possible evaluation for immune deficiency. Good luck.