Pcos and metroformin

Heather • I am 27 and have been with my DH for almost 6 years. We just got married 2 months ago but we are ready for his #2 and my #1. He has a DD that is 5 years old and we both love her so much! Baby dust !
Anyone have pcos and had or has spotting in between periods when taking metroformin? Last week I had brown discharge very light for half a day and this week is pink for 2 days.