I'm the same!
I can't afford ANY maternity clothes as they are just so overpriced!!!

you'd think with everything else a baby needs and all the costs they would cut us some slack trying to find pregnancy clothing.
At the mo i'm actually squeezing into a pair of old tracksuit bottoms, that have actually cut my skin on my hips they are that tight

Other than that i wear some linen pants but i cant wear them now as they are really thin and too cold to wear!
Mothercare is a no-go-zone for me as the prices are ridiculous...£24.99 for a tankini?!!! that amount of money has to last me half a week to live on!! so to go swimming i got myself some cheap mens shorts from sports shop and pushed my boobs into my bikini...size A..my boobs are now a d...so it was really uncomfy!
I just wish somwere like Primark would make maternity clothes, not too expensive!! xx