Unusual AF 😕

So my cycle is always right on expected day. This month af came early but was very light and only lasted barely 2 days. Now I'm 4 days after light bleeding I'm still not feeling right. My breasts are still swollen and itchy nipples, frequent urination, nausea if I don't eat for a while, headaches, backache, feeling like I'm hot flashing, insomnia, and I'm emotional to the point where I just cried when my husband called me from the store and they didn't have the burrito I wanted. I feel like I'm pregnant but yet idk if it was af or implantation. Someone help, any thoughts? I'm soooo confused😕