Hello engmahamed: Welcome to PsychCentral! PC is a great place to find support as well as to obtain mental health related information. There are many knowledgeable & caring members here. The more you post, & reply to other members' posts, the more you'll gain from the time you spend here.
I don't know that I can really answer your questions. People's reactions to psych medications are so individual. I think this is probably something you'll need to discuss with your prescribing physician. Personally I don't feel like any of the psych med's I've ever been on were of much benefit.
From my perspective, 45 days isn't a long time period within which to judge the effectiveness of a medication. I would think one would want to give it at least 2 or 3 months especially if it does seem to be doing some good now. However, there again, this sort of thing really varies from person-to-person & you should probably discuss your concerns with your mental health professional. Good luck!