BLAH, i hate not knowing whats going on with my body!

Last night around 2 in the morning i had extreme back pain and period type cramps that didnt bother me as much as the back pain.

i was worried but didnt think to much of it because i was able to fall asleep an hour later.

about an hour ago i was sitting and started feeling really sick and heavy.

i went to lay down and found that my baby was moving a lot more than usual. but his movement also made me feel nauseous.

a couple minutes later i got period type cramps that made my legs hurt and (sorry embarrasing and may be tmi!) made me feel like farting with a little bit of pressure...

is this normal? i know it would be better to ring my doctor but i wanted opinions first