Hi ladies, just looking for a bit advice...I'm a rather regular 28 day cycle girl, for the last couple of months I've ovulated around day 15 / 16 with very obvious ovulation pain. However this month I have had shingles and cystitis last week, could this make me ovulate late? I started opk on day 13 which was negative as was day 14. Days 15, 16 and today are visible but not quite as dark as the control line. I'm just starting to have pain over my ovary. Could I still ovulate? Would this make me have a longer overall cycle? Xx