idk what to think

Alexis • Mom of a little girl ❤️ Aubree Elizabeth Dellinger was born 9/1/28
My af is due the 18th. My SO looked at my boobs and said my nipples and areolas are darker. I have been spotting since the 8th (brown,pink and some red). I had some right hip pain ( on and off. Depending on how I lay) and my stomach hurt (two days). I get random headaches. I'm also bloated. What could this be?