CM and symptoms

Lorena • Had our baby girl! Ophelia Jean Rose came into the world Nov. 28, 2015!
I'm on Clomid. TTC #1 since May. AF due 3-11. When should I start getting symptoms? Been having light cramping a few days. Today I had a lot of creamy white/clearish cm. I think I'm only 4dpo. Unless this is fertile cm. so confused.
Also, this was my OPK
(Top to bottom) Sunday 2-22
Monday 2-23
Today 2-27
Does Clomid make OPK's positive?