Please help. 11 days post first day of last period I had unprotected sex. About 19 days post my breasts became sore, headaches, pelvis pain especially on left side, very tired, very hungry. At 23 days post I had brown discharge for 2 days - 1st day very light and second medium flow. I'm now 26 days post first day of last period and discharge has stopped, but I'm still experiencing headaches, breast pain, pelvic pain on left side, very tired, very hungry, cramps in my hands. Has anyone experienced anything similar? Could I be pregnant?

From what I've read I'm still to early to show + on pg test. I'm just do worried I have to ask someone...
I'm worried because I recently split with my boyfriend and I "feel pregnant" and I'm not sure what to do.