Help! PUPPS or Stretchmarks???

im not sure which i have...i had a tiny bump on my stomach and itched it last night..it started looking red then this morning the area is lighter than my complexion and resembles a stretchmark but im unsure...the bump is still there and my whole abdomen, area and upper legs (at times) is VERY itchy..i have an appt next week but was just wondering in the meantime if this has happened to anyone..i lotion everyday with burts bees bell er and have started doing it more often to relieve the itching..any ideas? thanks in advance :-)