AF 11 days late, multiple tests negative lots of cramps.

Hey all,

My first post in here a while back was fretting about my cycle getting out of whack due to marathon running training. The month before my husband and I started ttc, my AF visit was about ten days late. We had not had unprotected Sex in that month, and I was quite confident it wasn't possible I was pregnant. Next month, still running, period starts exactly on the day it's meant. We weren't successful in our attempt to conceive, but at least my cycle seemed back on track. So that started on the 22nd of September.

It is now nearing November 1st. I'm still running, but not as much, work has prevented me from doing so, and in fact I don't believe I've run at all in two weeks. AF has not stopped by. I'm cramping on and off, super bloated and having minor other pms symptoms. I've taken three pregnancy tests, all clearly negative. Should I bother to continue testing, or is it simply the exercise routine still messing with my cycle (and follow up to that, should I cut the running out altogether while we're ttc?)

Thanks! My mom suggested the problem is I'm taking the tests in the evening and I drink a LOT of water during the day. I may be diluting the tests?