Could I be pregnant? ?

sierra • in a current relationship with the love of my life ♡
OK so I'm 16dpo and I'm 2 days late with no sign of af I have a few very very slight cramps nothing major I also had very very very light bleeding at 4dpo for 2 days and now my boobs feel so huge and my veins are more noticeable to me at least and my nipples seem to be getting darker does anyone know what could be going on ??