Loads of people will say to you ‘oh just make do and get a few bits’ but I find that’s a bit of a false economy as I just ended up uncomfortable towards the end and bought a few extras but then only got a few weeks wear out of them.
Loads of people recommended Love Leggings to me and at first I loved mine but a few months of wear in now and I have found they’ve not washed well at all. I liked the jeggings I got from them though.
Buy some maternity pjs - again I bought pjs a few sizes up from primark but now they don’t fit me either and I wish I’d just bought a few pairs of maternity pjs.
I love this dress, it’s super comfy and looks nice - www.newlook.com/uk/womens/clothing/knitwear/maternity-black-stripe-ribbed-knit-long-sleeve-midi-dress/p/849596309
I like these too - www2.hm.com/en_gb/productpage.0946613006.html and have been able to wear lots of my normal jumpers etc with those
Comfy sets like this are good for just round the house/pj substitutes
www2.hm.com/en_gb/productpage.1085849002.html
h and m also have some jumpers with slits up the side so they kind of expand with your bump and could still wear them after.
For work I’ve lived in jumper dress type things but possibly getting a bit warm for that. Not maternity ones - but they’ve stretched nicely.
These trousers have been brilliant for work - www.newlook.com/uk/womens/clothing/trousers/maternity-black-zip-over-bump-slim-long-trousers/p/803503901
Cotton/slightly stretch midi dresses have been good too, this sort of thing - direct.asda.com/george/women/dresses/floral-print-jersey-midi-dress/GEM1007795,default,pd.html?cgid=D1M1G20C1
direct.asda.com/george/women/dresses/black-button-up-midi-dress/GEM1008186,default,pd.html?cgid=D1M1G20C1
Asda, new look etc all do maternity ranges but it’s online. The h and m and primark in our local city had small maternity ranges in store
Lastly get yourself some knickers, I got some big full size briefs from M and s a couple of sizes up. I also like these as they are really comfy and gave my bump a nice round shape in the early days haha Gratlin Women's Seamless Pregnancy Shapewear High Waist Shorts Mid-Thigh Underwear amzn.eu/d/b76fbv5
Ive found it’s a bit mix and match, some stuff you’ll order and hate and some stuff will be great, you just have to accept that it’s a case of ordering bits online and trying them. I do love Vinted and got a gorgeous maternity black pinafore that I’ve lived in, but I also got a couple of maternity jumpers that I didn’t like really and then I’m stuck with them so it’s hit and miss.