My menses cycle already 37 days. Does it mean that i might be pregnant? Usual cycle is 28-31 days.

No. Sometimes menses cycle can be longer due to stress. The best way to know is check for symtoms or take a test to be accurate. If you need pregnancy test strip i have some to giveaway 7pcs per pax. P&H $1.50.. Or wait for about 1 more week to take a test