my girlfriend is going to be going on birth control, and when reading through the profile on clenbuterol she asked if it would counteract at all with her birthcontrol. shes not sure yet if she wants to get on something estrogen only or maybe even estrogen and progesterone. could she try clenbuterol safely along with birth control or should she do it all before beginning birthcontrol (say 6 to 12 weeks) then begin birthcontrol?