The count has it right. Softer reed, maybe only down one notch will help. In addition, you may need to take more mouthpiece than you're used to. Many times, if the mouthpiece is more open than you're used to, the tendency is to tighten the embouchure to close off the reed to match what you're used to.

You said, in Spanish, 'I have juice the saxophone? And I!' I think what you meant to say was, 'Toca usted el saxofon? Yo tambien!' or, 'Tiene usted un saxofon? Yo tambien!' I think by 'jugo', you meant 'I play', but jugar means to play as in a game. For an instrument, you would use the verb 'tocar'. If you meant 'I have to play the saxophone', you would say 'Tengo que tocar...' as tener can not be followed by an infinitave. While 'y yo' is gramatically correct, it is not commonly said. Usually, people say 'yo tambien'. Also, you need to conjugate verbs correctly. If you're talking about/to someone you don't really know, or an adult, you say 'usted tiene' for you have. If you are asking 'Do you have?', it's switched; 'Tiene usted?'. And technically, since you're not sure they have, you should use the subjunctive form of tener, and say 'Tenga usted?'

To get back on the subject, a softer reed will help you out. I'd stay away from the Javas and try out a nice Rico Jazz Select Unfiled. Try out a 2H or 3S and see what that does. It could also be that you're just not used to the tip opening. Going from something like a Meyer 5 to a Dukoff D7 is a nice little jump and it will take a good bit more air to hit your lower notes now. SO, more air + softer reed + a little time adjusting=no more problems!