hi y'all. Been ttc for 2yrs+. no baby so far. Had mc in march at 8.2 weeks: it was a symptomless pregnancy. Am on cd 15 of a 25 day cycle. For the past three days I've had a 'heavy' feeling in lower abdomen, a bit like when Im on my period. Could this be indicative of an underlying problem preventing us from conceiving? OPKs no good at the moment, especially as cycle length been shrinking from a regular 28 days, to a 25 day one for the past two! All advice welcome. Many thanks