I would just go to ER if I were you. Especially cause you are a few months out. Rather be on the safe side and have them do a whole work up on you. I had severe pain a year ago ..chills nausea you name it....hubby rushed me to ER and they immediately did a ct scan...turns out I had kidney stones. ..fast forward this year ...started having pain and nausea again but a bit stronger. ..called dr. they ran test turns out it was acid in my stomach. ..any kind of pain right now could be anything. ..I suggest you go get checked. ..