Feel so depressed

Me and fiance been trying for 1st babey the day yesterday I got faint postive then my fiances older sister found she was having a baby so pleased for her and was excited to knowing got bfp but only told fiance and now I took a test this morning a different on come faint line but I was bleeding and pinkish as today went on I having weird feeling in belly not like craps but making me feel sick and boobs been sore on sides for about 4 days. Period was. Meant to start 9 days ago am so confused don't wanna go doctor though as feel though just cry and look like is it when find out not pregnant.it gonna be hard for since sister having baby now even she had 2 kids and her oldest is 18 with a kid and other kid is nearly 17. I just gonna watch everyone buying baby stuff and stuff gonna make me look like not happy for her when I am just so upset I dunno if oregant or not blood now red but pink when wipe and sorry for tmi but I changed pad not as much would be on normall period would say more then spotting though am confussed my fiance now asleep next me I cry so much I can't sleep 😭