Ay anak, congrats sa positive PT! But please please go see a doctor or OB as soon as you can, they need to confirm with a blood test or ultrasound, hindi lang PT, para ma-check ang baby at para sure tayo. One of my mum friends had irregular periods too and found out she was preggy same way, but the doctor visit was what made it official and safe na.
You don't have to repeat the PT (mahal!), but go to a clinic or hospital instead, mas accurate at makikita nila kung lahat ng okay with you and baby. That body pain and mood swings you're feeling, ang doctor lang ang can check kung connected sa pregnancy or something else. Take care, at congrats ulit!