Cycle day 53 and no bfp but cramps

Hi guys,

So I'm a bit concerned with my cycle as I've been pretty irregular since my period returned after having my son 13mths ago but never this long. 4 days ago I had increased in clear slimy discharge and I got bad cramping that lasted 2 days & was slightly worse than I would expect from before my period. Anyway still no sign of period and I'm wondering if it could be really late implantation cramps? Just not sure as according to my logs my partner and I haven't had sex in 2 weeks (been away). I did have implantation cramping with my son though...... Any thoughts ladies?