Chances of pregnancy ?

Hi guys so I already messaged my Dr but wanting your opinion. I got my Implanon removed on the 25th of Jan had it for less than a year . And decided to get on lower dose birth control pills . Started those on the 26 and missed 3 but started up again I’m 6 days late and having cramps and light spotting today mucusy with brown streaks . Nauseas and horrible migraines . I’m a mom of 4 already 😩 I noticed I forgot yesterday and the day before pill I know I know I’m horrible but indeed if I am pregnant we’re happy but what do y’all think ?