Hello,
I'm a mature student and in my second year of uni and I've had a really difficult pregnancy but up to now I've managed okay, submitted all my work on time and getting decent grades etc but now I'm in my nine month of pregnancy and things are hard again, I had HG in my first trimester and that seems to have resurfaced since coming into my third trimester, I've had quite a few hospital appointments and a few more to go as I have an elcs booked in for the 26th January so I messaged my tutor and he very kindly gave me an extra week to finish my assessment but in that week I've been in hospital with suspected pre-eclampsia which it turned out not to be thank goodness but we've also be poorly with covid19 (only mildly but still when you feel like rubbish anyway it really takes a toll), I've been working on it all night and plan to work on it al day today but I'm finding it really difficult and stressing myself out too much but I feel like I'm being a pain in the ass asking for another extension but I'd want to submit work actually worth submitting instead of rushing through it and failing anyway - I know millions and millions of women get through pregnancy just fine but my body doesn't seem to agree with it, I can't wait to meet him but I cannot wait until he's out of me 
YABU - get your work done and stop moaning.
YANBU - speak to your tutor and ask for an extension if you're struggling.