3rd trimester struggles

Has anyone else found the last trimester absolutely awful? I’m constantly sore all around my bump and pelvis, I can’t walk or stand too long or my back and hips cramp up ☹️ my thighs are in agony especially when I’m trying to sleep at night and now I just feel so unwell I’m constantly tired napping several times a day and feel totally drained. Is there anything I can do to try and build myself up a bit I’m so deflated now and constantly struggling with anxiety that it isn’t normal and panicking the baby is okay 😭 she’s measuring quite big so I have been getting regular scans that give me some peace of mind she’s also in breech so thinking I might be taken early for a Caesarian. Any help or advice or words of encouragement welcome ladies and thank you in advance ❤️😢