PLEASE HELP 3rd trimester pain in lower abdomen??

Im 33+3 weeks pregnant and kept waking up last night with very uncomfortable shooting pain in my lower abdomen. The pain started at my birthing class last night when we were practicing pain relieving positions, and one of them required me to stand and put my foot on a chair and kind of stretch/lunge, but for some reason i could NOT do it because it hurt so bad in my lower abdomen. The midwife teaching the class said that it could be because hes really low in my pelvis, but I already know that and it bothers me but not to this extent. I woke up crying multiple times through the night just tossing and turning constantly with this horrible pain like my baby was crushing everything inside me. Is this normal? If this is normal and I have to go another 6 weeks feeling like this, i might die. Im not seeing my midwife until next wednesday unless this gets worse. PLEASE HELP