I have had increased need to urinate, diarrhea, and am often cold. never had reg periods but weird this month. could i be pregnant?

Pregnant?: If you have missed a menstrual period get a home pregnancy test kit and measure a first morning voided urine specimen. If negative repeat in one week. Good luck.

I suppose, but...: Pregnancy would be pretty low on the list to explain those complaints, but a home pregnancy test will give you the answer for sure. good wishes.

Possibly: If you are "of reproductive age", & you're sexually active, pregnancy is a possibility. Even tho your periods are irregular, which suggests you don't ovulate regularly, you still probably ovulate from time to time. As to your symptoms, only the increased frequency of urination is considered a typical sign of pregnancy. If these other symptoms have been present for a while, see your doctor.