"also lotta ppl tell me i have to b real good in maths to get this degree,,i m not a genius. but i m a lil above the avergae level students."

If you're willing to work hard and that is the field you really want to get into (even though it's tough), I'd say go for it rather than live a life of regret.  Your two more years of sacrifive can mean a change in your future course of life (for the better!!).  Hard work and commitment will get you places son!  Best.