So sorry to hear you're going through this. Pain in the left arm and the back is always concerning, in terms of whether it could be heart related...
Some L-foods are: Ladyfingers Lager Laffy Taffy Lard lasagne Lake trout lamb lamb chops lamb's lettuce lamingtons Lamprey Lancashire cheese Lancashire hotpot Langostine (aka scampi or Norway lobster)langousten lardy cakes Latke (potato pancake) lattice-topped pie Lay's potato chips lean ground beef lean meat leche flan (milky custard dessert) Lechee ...
1 L from Death Note. 2  A handful of other characters use one-letter codenames at some point, as well, (most notably L's successor Near first introduces himself as N) but, as revealed in the how to read book, L actually is his first name.