SLIGHT/ VERY LIGHT SPOTTING

slight spotting nung first ihi ko in the morning, 19 weeks pregnant. Is it normal during second trimester momshies? Sino dito nakaranas din ng ganyan? but after how many times umihi, nawala naman, yun lang talaga first ihi ko pag gising. I already consulted w/ my ob. Rest lang daw and Duvadilan meds. Thank you!