What is this?!

Deanna

I went to the doctors and he said do to my BBT chart he said I didn't ovulate. He put me on Clomid 50 mg said take pills day 5-9 but I messed up cuz he didn't explain it well. So I got my period July 3rd and took my first pill July 5th. I knew I messed up with looking stuff up. So I called him and he told me to take the next 4 July 8-11. Friday after one pill I had bad back pain and lower abdomen pain almost in tears. Yesterday and today I had this and when I wiped and on my underwear it's brown. Is this normal. My OB is a jerk and I changed but can't see him till August 3rd. Someone help please I'm nervous