Hi. Been on Zoloft for 12 weeks but been on 150mg for 7 weeks. Things were going really well until I had my period. I was a bit anxious before it, then I was fine on my period, but 2 days after it finished, I sunk into depression. This is now my 4th day of feeling like this. Why don't they help when I need them the most? Sick of living like this every month. My doctor has prescribed loestrin but I'm scared to take it in case it makes things worse. Should I up my Zoloft dose? Please can someone give me advice? Thankyou