Hi Buffyx
Sorry to mix in but when I stopped taking my BCP back in October 2013, I had a
horrible month where I had, among other things: painful breasts, cramps on/off, horrible back pain, nausea on/off and headaches. I really suffered that 1st month and felt pregnant, especially during my 2WW. We didn't even try very hard that month because I felt so horrible
Luckily I felt better the next couple of months after but still felt like my hormones were giving me "symptoms." My 1st cycle off BCP landed around 26-27 days and have been so ever since which is what I believe they were before I started taking BCPs
So yeah, I wouldn't read too much into anything the first month off BCP, maybe not even the next couple of months or so either
Of course if you BD'd during your fertile time it's certainly possible but I'd just not read into anything and see what happens.
Good luck