Hello! Clearly there is something a bit out of the ordinary going on here, else your period would have started by now. Aside from
pregnancy, there are a number of issues that can delay a woman's period, including
thyroid disease, severe stress, illness, ovarian cysts, obesity, excessive exercise, extremely low body weight and certain medications.
Your history and symptoms are suggestive of an ovarian cyst. Ovarian cysts frequently produce hormones that disrupt a woman's cycle and cause menstrual irregularities. These hormones can also trigger "pregnancy symptoms," such as breast tenderness,
nausea, acne and
bloating. Most ovarian cysts are self-limiting and resolve within a cycle or two, but some do persist, and cysts sometimes rupture or twist, causing sudden, severe
pelvic pain.
If your OB/GYN isn't yet aware of all of your symptoms, I'd suggest you communicate them to him/her. While it's reasonable to wait an ovarian cyst out, you may be asked to come in sooner to confirm your diagnosis and discuss other options.
I hope that helps, and good luck!