By now i should be 19 days late but IDK!!!

In the Month of may on my fertility window I had sex like 3 times. And tried a day before my ovulation prediction day too. After that between days 9-14 I had (well guessing) implantation symptoms which feels like pregnancy symptoms, except vomiting, but I had this heavy feeling which I never experience before and nipple itchiness. I keep having mild cramps every day and sometimes mild pain on my right side. Mostly everything that I eat sometimes makes my stomach sick and hurt. I did a couple of test even blood test and they all were BFN. So I was thinking that this month of June, I was going to start my period bc, I started having acne and cramps also. Guess what???? Since June 4 Monday I've been spotting some light brown discharge. It dont fill a mini pad (panniliner) I could only see it, either of i wipe or when i take too long to go check myself. So I need some advice I need some answer I'm TTC. I want to see if any of you fems out there been tru the same thing I'm going tru.