(normally I would not be so quick to jump to conclusions but pubmed offered it as the only possible explanation, which was worrisome), diabetic retinopathy (I am not even diabetic but the optometrist scared me and referred me to the retinal specialist) and ovarian cancer (ugh, I am scared to get this one checked - have a big cyst on left side and have GOT to go get my ultrasound but I know it is probably fine other than needing some kind of treatment because it is too big). See? You are not alone.
Besides, is it considered menopause after just 5 months? Your body can still throw out a random period here or there, I think, till it finally ends. Your body may well be trying its hardest to ptoduce enough fsh to finally find that one last egg (whether it's there or not) and have built a lining in expectation. Try to relax....I bet all is well.