Frozen shoulder recovery pain

Hi all, I’ve had frozen shoulder for almost a year but it has mostly resolved, I have full range in all directions apart from external rotation but only missing that by about 10 degrees so more than functional range. However, the last few weeks I’ve been really really achy it’s so bad whether I’m moving or at rest, mainly in my lat behind armpit type area, side rib arm aches etc I am also pregnant so not sure if coming from that but I’m starting to panic that the shoulder is refreezing again as it feels similar to where my journey began. Is this normal? I’m so upset