What dose of Metformin do y'all take?

Krys • 💕Happy Mom & Wifey💕 TTC #2 after miscarriage with PCOS
What are y'alls dose of metformin???
 I am suppose to take 4-500mg tablets per day but most days my stomach can only handle 2. I'm TTC and hope that 2 is enough help for us. What do y'all take?  And do y'all have side effects? Thoughts??