You know, many people these days are despising the Science stream, but those people are the very same people who couldn't get admission into it in high school.

Jokes apart, there are several options for you. The number of options is actually overwhelming if you think about each one.
You could become An Engineer, study Business if you're interested, go into Sciences, etc.

Hello,
Well students who have PCM believe that apart from engineering there are no option for them. But let me tell you in this answer about so many career options for Science Students (PCM) apart form engineering:
1. If you only like either Physics, Chemistry and Maths as a subject, engineering might not be good for you as every specialisation in engineering combined either of two subjects - P,C or M. So if you like only one subject out of P,C,M look at options to do Core Science related careers in these individual subjects like:
If you like only Physics you have career options like Astrophysics, Geophysics, Molecular Physics, Nuclear Physics, Optical Physics.
If you like only Chemistry you have career options like Biochemistry, Nuclear Chemistry, Organic Chemistry, Physical Chemistry rtc.
If you like only Maths you have career options like Applied Mathematics, Statistics, Geometric Analyst, Computational Mathematics.
So key thing is to see if you are passionate about only 1 subject or 2 subject out of P,C,M and take your call accorindgly.
2. Non-Science options for PCM - You could also look at careers in Legal Studies, Design (product Design, UI Design etc.), Media & Communication etc.
3. Architecture
4. Defence Services - NDA
5. IT - Yes its a part of engineering, but you can look at IT as only CODING. So if you love coding and high reasoning skills, you may opt for IT courses like BCA, Networking, BSC in computers etc.
Hope this helps you out
Thankyou for contacting Careers 360

Thanks for the question and its a very good question 

the world does not end in engineering there are other fields like hotel management, LAw, NDA, ARMY technical, CA, BSC,, BCOM, gradution in any field then UPSC , BANking , RAilway, Civil servises like IAS , IPS IFS, indian airforce , navy, there are a hell lot of oppurtunities out there.

Good Luck for your life ahead.