[ Pregnancy ] Open Question : Weird Symptoms? Help?

Okay so I had unprotected sex with my ex boyfriend about three months ago. Not on purpose but I was drunk and had forgotten to take my birth control pill... (I know... I dont want any negative comments about this, I just need answers... I already have a daughter & I'm not unstable). Well I have been getting my period and everything for the past three months but I started gaining weight about two weeks ago. I have been eating more (But I have a thyroid problem so it's REALLY hard to gain weight for me, always has been). & I came to Miami on Monday with my best friend (I'm still here, it's my last night) I was having problems staying awake while driving, & my stomach is hard and BIG. Like it just grew over the past three days. It's ridiculous. I NEVER bloat like this before my period either. I had an accident with my new boyfriend once this past month too but.... Idk. Is there any way that I could have been pregnant this whole time with my ex's baby???? All the tests say negative too. Even up til yesterday they have been negative. My stomach is hard, tender to the touch, I'm having random hard cramps, I feel SO tired, Im constipated, ALWAYS hungry but moreso thirsty & (not to be gross) but there's a dark brown ring around my nipples. HELP?!!!!

Source: http://answers.yahoo.com/question/index?qid=20120111225921AAgGrQ4

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