Mycycle is 35 days; had protected sex on 15th; but mens(also white discharge)came so little from day30-37 is it sign of pregnancy(i exercise everyday)?

Probably not: Many women have occasional variation of their mucus discharge, some spotting between periods, a heavier or a lighter period, a longer or shorter period, or even a missed period. Having 1 or 2 of these symptoms doesn’t necessarily mean there is a medical problem, but a visit to one’s doctor is a good idea if symptoms are recurring. If very worried about pregnancy, one can do a home pregnancy test.