Ay, 5 weeks and 4 days pa lang kaya okay lang na may weird sensations, ang early pregnancy talaga ay puno ng changes na nakakaalarma! Pero ang combination ng init at nausea plus that burning feeling, better to check with your OB just to make sure everything's okay, lalo na kung first time mo. One of my mum friends had similar sensations and parang anxiety lang siya dahil hindi alam kung normal, pero after the ultrasound okay lang naman, so mas calm siya. Get it checked lang para sa peace of mind mo, hindi ka magsisisi!