Experiecing as though someone is squeezing the hecck out of your stomach while pregnant is not normal. Dispite what the U Sounds results showed, there is definately a problem, and the spotting could be the sign of a miscarriage. Please get a 2nd opinion, with a OB/GYN to run specific tests, (they will know what to do) you just get there. If you don't feel you can wait for an appointment please go immediately to the ER.
Well it depends on where the pain is. I know that last week which was when I was fourteen weeks along as well. I was having alot of stomach pain. Im talking i was in tears. I soon found out it was gas. Well I followed someone else's advice along with my doctors advice. Doctor told me to take gas x. And a friend told me to do this yoga position which helps gas come out. The yoga position was get on all fours and then place your head to the floor. It may be uncomfortable and give you a head rush but it soo relieved me. With my first born I didn't have that problem so it took me a while to figure out what was causing soo much pain. I felt like you described. Also had a lot of tenderness and pain during sex. But as soon as my gas was gone all pain, tenderness and everything else went away. GOOd luck figuring out the cause.