Sorry to hear that. I hate to disagree, but I think if you were going to have a problem with the product, as far as making you break out, it would've shown up much quicker than that. It doesn't take 4 weeks for a product to clog your pores. Was your period due, did you go off the pill, did you stop drinking lots of water?? There are so many things that could cause a breakout.
I would try stopping the lotion, see if your face clears up, if so, try the lotion again and see what happens, just to make sure it's that and not something else. JMHO....