tmi question, but whatever. i have been losing my mucus plug since friday evening, and have been…

tmi question, but whatever. i have been losing my mucus plug since friday evening, and have been super crampy to the point where its made me so nauseous ive thrown up (3 times) and went from being super constipated to going 4 times today.. so i guess what im asking is if this is all normal leading up to labor things..? has anyone else experienced anything like this?