amendoa

hello, I have prati kal surp yog. Rahu in the 4th house along with mangal ketu in the 10th house. Guru and Chandra in the 5th house. the whole janam kundli is like this: 1th house: lagna 2nd and 3rd house: empty 4th house: rahu and mangla 5th house: guru chandra 6th: empty 7th house: nept, uran, ravi and budth 8th: sukra and sani 9th: empty 10th: ketu 11th and 12th: empty from my understanding guru and chandra on the 5th house means Gatkarshi yog, but I dont understand what does that mean, can some1 pls explaim me this. also how can you tell it is prati kal surp and not kal surp? and how is the overal kundli, when should I get a job?