lipid panel lab results

I had my lipid panel drawn 9/26/08 with results of chol=131; LDL=61, HDL=62 then again in 2/28/09 and chol now =187; LDL=106; HDL=62.   Is is possible that the chol and LDL spike so much in only 5 months?   I am hypothyroid on daily levothyroxine med, take birth control pills and glucophage 500mg daily for type II DM. All recently diagnosed within last 2 years.  I am 34 and 105 pounds. I quit smoking 2 months ago...however i wasn't a major smoker....it took me 3-4 days to finish a pack of cigarettes.  I'm concerned of the spike in cholesterol.  

Also..my ALK (13), AST (6), and T bili (1.8) are off.  WHat does that really mean? My MD doesn't seem too concerned about it, said once it could be gall stone related. I don't have stones to my knowledge.  Can it be related to the above?

Thank you for your time
PIKKKA