Please help and answers?

I know that this has been asked repeatedly but every situation and person is different. My lmp was the 4th, I ovulated on the 14th, had cramps and a little glob of pink/brown mixed with cm on the 21st.....my bf & I had sex almost every night, even the day before & after ovulation. I have been having cramps off and on since ovulation, constipated at times, tingling & itchy boobs, sticky cm, sometimes nausea, super emotional, peeing more often, sleepy all the time, and a headache that won't go away. Next period isn't due till June 2nd. Tonight had sex with my bf and when done used bathroom. When I wiped I found just some really light pink blood in it. I took a hpt and it was negative, was just wondering if anyone else has ever experienced any of this?? BTW, I'm 31 with 3 children and never had this happen before I've missed a period. Please help if you can, thanks!!