7 months since surgery...

I had surgery to remove my baby (6 weeks) from my left fallopian tube in March. They were able to save my tube, but apparently didn't remove all of the tissue, because after monitoring my hcg levels, they began to rise drastically. I was given two rounds of methotrexate until they got down below 5. I was told to wait to try again after 3 cycles, or when my periods regulated. So here I am... 7 months later, missed period, by a lot, negative hpts, and blood test, and no sign of ovulation this month or my damn period for that matter. Even after my surgery my period started as though I hadn't even skipped a beat. I have been regular for the last 4+ years, when I officially stopped bc and began charting. I haven't been any "more" stressed than usual... if anything less lately. I just want to know if this cruel joke has been played on anyone else, cause I feel like I'm the only one, and when you're ttc it is the most difficult thing to comprehend why you can't "simply" get pregnant.