Feeling sick!

Louise • Wife to my best friend, mumma to one beautiful 2yo girl. Love learning new recipes and trying new things.
I missed maybe two days on my mini pill last week and have been feeling nauseous and bloated since. Don't feel like eating and have just been drinking water. It's the middle of summer here in Australia and we've had a few hot and humid days. I'm not really sure as to why I feel like this. I rarely had morning sickness with my daughter, but that was almost 3 years ago! I've taken a pregnancy test even though I know it won't show anything and of course came out negative. Anyone had anything like this? I just want it to go away! I'm 22 and eat fairly healthy. I'm active but not fit, I would say I'm a chubby girl, just above average weight. Period is due in 15 days. Not sure if that helps anyone. 
Feeling tired 😣