You must not worry so much about getting pregnant so soon after removing mirena
High protein in urine
may indicate a urinary tract infection
. This may not prevent pregnancy
but it is better to get it treated.
The chances of resuming a normal period pattern as well as getting pregnant after removal of mirena are very good. However it is only 11 days since removal. Remember that the most fertile period is from day 12-18 of a normal 28 day cycle counting from the first day of start of menses. Also ovulation usually occurs on the 13 or 14 day. So it is obvious that your ovulation tests are negative.
Do not worry and best of luck, hope you will conceive soon.