Really cant tell

So a little background on me, been with my guy for nearly 2 years. First 8 montjs we used pull out method and then I got on birth control (still pulls out).

Last month I decided to skip because I wanted to see if my acid reflux would let up and it didn't so I got back on this month. I haven't been taking it on time every day. My nipples got darker suddenly and for a couple days they were sore. I started feeling kinda tired and sometimes I feel a little sick. I'm confused because we all know you can get pregnancy symptoms from the pill so I'm not sure which it is. I still have 3 active days left