Looks like you have 3 plants in that 1 pot
It's normal for the lower leaves to yellow and come off... but seeing as it looks like 2 at once that could be an issue.
The flowers fade over time and if very warm... however because the plant is loosing buds then something is definitely up. Bizarrely if they are near ripe fruit this can cause the buds to do that, it may also be caused by being moved around a lot?
kindrag23 also raised a fair point, have you looked at the roots since bringing it home? Were they solid and firm? The plant pot seems to be in a container, do you drain the container of any excess water after you water on Tuesdays?
Lots and lots of questions! More you can tell us easier it will be to try and narrow down what's happening.