A hangover feeling? Wait are you sure it was ex? You would have known if you were rolling lol but definitely tell your Dr. and maybe find some new friends, that's a horrible thing to do.
Wow, that's a ****** joke to play on a friend even if they aren't expecting. I'm not entirely sure what a Molly is but I believe it's some sort of drug. I think your best bet is to see your doctor that way they can be aware and run any necessary tests. But to calm you down for now, if you haven't had any bleeding or cramping by now then I think it's safe to say baby is for the most part okay, I don't know what kind of damage a Molly can do though. I would definitely talk to a doctor about possible harmful effects just so you can be prepared. (and re evaluate your friends, seriously, they shouldn't be spiking anybodys drink, that's just disgusting and wrong)
That's not a very funny joke.. pregnant or not.. everything should be ok tho. Stay positive and don't stress
Your baby is protected by the placenta. Make a dr appt to find out for sure or by an at home doppler. My friend did ecstasy when she was pregnant (she wasnt aware she was pregnant) and her baby turned out fine.