no.
No. Of course, that depends on what you mean by "petting." In order to cause pregnancy, one sperm cell from the man needs to meet one egg cell from the woman. So if the man's sperm doesn't contact the woman's egg, there will be no pregnancy. Heavy petting can pass some diseases, though. "Heavy petting" means exchanges of fluid or contact between mucus membranes. You should do a little reading. I suggest Sex for Dummies by Dr. Ruth Westheimer. It's a pretty good book even if you're not a "dummy!"
"Cause you ain't petting me right"
No they do not cause pregnancy.
No it doesn't cause, prevent or end a pregnancy.
Cuddling won't cause pregnancy.
No, pregnancy does not cause blue sweat.
Yes, lithium can cause a false pregnancy on a pregnancy test.
White secretions won't cause pregnancy.
Sharing a bath won't cause pregnancy.
Pregnancy may cause your feet to swell.
While it doesn't actually cause pregnancy, it can be a prelude to it.
backache doesnt cause pregnancy no, but pregnancy can cause backache. although keep a watch on how often the pain comes, it could be a sign of labor.