This is probably tmi but I'm 39 weeks and 3 days and I've been having a lot of gas and poo pains but when I go to use…

This is probably tmi but I'm 39 weeks and 3 days and I've been having a lot of gas and poo pains but when I go to use the restroom hardly anything domes out my back has been killing me and a lot of goo is coming out what could this mean.