Water Retention, High Blood Pressure During Pregnancy, Weight Gain, Low Foeta Weight, Abortion. Plan For Pregnancy?

i am 27 year old,i was pregnent last year n my pregnancy went well upto 5 month but after that the fetus growth became slow n after 2 month medication ,have to abort my child by normal false pain delivary.i was only 53 kg wen my pregnancy started but due to water retention and high blood pressure it increased upto 72 kg in 5 month,wheras the baby s weight was only 500 gm and my dr. was continuosly asking me that time, to loose weight ,have less salt n sugar ,want to know can weight gain also cause a issue next time.now again i m thinking to paln but really worried as i couldnot shed my weight more then 63 kg. plz suggest me when should i plan and what safty i should keep? should i shed some kg s and then plan? kindly suggest.thanks in advance.