Getting signed off work

Hi everyone. I am struggling with work guilt... I have a GP appointment today for SPD which is impacting on just about everything 😩 I’m in constant pain and getting hardly any sleep which is causing me to be exhausted. I am hoping he will sign me off, even if just for a week to give me the chance to rest and go to another pre booked assessment for my pain on a Sunday. But I do an incredibly stressful job and feel bad on colleagues for getting signed off as my work will need to be reallocated in the meantime. I’m 30 weeks and scheduled to start my mat leave late December.

Is anyone else struggling with this guilt. I feel awful and it’s giving me more anxiety (I have depression and anxiety anyway and the pain is making everything 10x worse through lack of sleep)... now I feel I’m letting everyone down!!

Any advice would be appreciated x