Have any of you ladies experienced this?-

After my last window of trying (I'm only on my 3rd, newbie here) I experienced some weird things. I am very regular, to the day. But about 6 days after ovulation I began to get terrible acne, extremely sore breasts, cramps. I thought ok, early pms, I didn't want to get too much into wishful thinking since I had just started trying.I figured I'd wait and test, but of course I tested at about 8 dpo, bfn. Took another test the next day bfn. At about 4 days before af was due I spotted, not normal for me, could be implantation? Then later that day it increased into my regular af, and continued on to a normal period. What wasn't normal was that it was 4 days early. Can trying to conceive throw off my normal cycle? I had no pain, extra cramping, anything. Now I'm so thrown off as far as my fertile window goes. Has anyone else experienced anything like this?