Okay ladies responses welcomed

On April 24th I had a reg period. I ov'd asserting the 7th. Since then I been experiencing sickness on and off , lower back ache, some heightened smell, now on may 16th I was experiencing a little more of a watery discharge and when I wiped I had a string of brown mucus on the toilet paper but nothing since. According to glow I am due for af today and have mild back ache past few days and headaches on and off. Any suggestions of what I may be experiencing?