You probably should play it cool because calling her too much might boost her ego, and then she'll probably will begin to think that you are sprung on her, and that you might be a scrub. If she said two weeks, maybe that goes better with her schedule. She might not have anything open until two weeks, unless she plans on seeing other guys through the week and then kicking with you in the next week like she said. She gave you the number on Sun. You called Tuesday. That was like only two days, too soon. Maybe you can call her Friday or Saturday. Then set up to go on a date within the two week time period. At least you will have let a week go by, so that you still seem interested but not obsessive interested. Also don't leave too many messages, that's like stalking. But honestly, she seems like a quite busy lady, so if you are looking for someone who is fast paced, she fits the profile. But if you aren't, then maybe you might want to go out at least once to see if she is really for you or not, and then you'll have your decision to pursue her or not.