Signs of pregnancy?

Hi girls 💜

So my nipples been hurting since 5dpo and headaches since 6dpo .. i am suppose to get my period on the 18th of dec even though glow says im suppose to have it today.. my cycle is 32 days not 27 ... anyways i also have cold and headache and my nipples are still sore .. and these past 3 or 4 days when i wake up in the morning i ran to the bathroom to pass lots of gas .. never had this before no sounds just air .. lol sounds weird i am sorry .. but that whats happening .. could it be?