im having a soil crisis

hey my plants have been growing beautifully but we are getting to the point where they need to be transplanted in to a bigger pot. but i dont have the same soil that my plants have been growing in. and i cant get any more of it. does any one have any suggestions on what im suppost to do in this crisis

the store... any organic mixture of soil perlite, guano.. get some foxfarm or happyfrog if u can... just get more potting soil... the brand and type doesnt really matter... just check the ph and look at adding soil as adding nutrients... and its also beneficial to change the source and type of nutrients on the plant.. so different soils in 1 pot should work out well.