Ay, normal lang yan mama, maraming tao ang nakakakuha ng ganyan during pregnancy dahil sa hormonal changes! One of my mum friends had something similar sa second trimester niya, and it went away after delivery, so hindi ka nag-iisa sa concern na ito. Since your OB already checked you yesterday and explained it's pregnancy-related, that's reassuring na, pero if it spreads pa or mag-develop ng iba pang symptoms, just message your doctor ulit para peace of mind mo, okay? Congrats sa first baby!