Depo shot

So I have been having sex I'm on depo and I use a condom. The condom has come off a couple times but only after were done.

I've been feeling so sick and flu like I'm so cold but I'm so sweaty. I'm nauseous and very dizzy and I have crazy heartburn not to mention periods lasting for ever uve been bleeding for 42 days so far. I feel so bloated and gassy. I've spoken to my doctor but nobody has a solution.

I've taken pregnancy tests and all negative. Has anyone else experienced this on depo? ?