I have heard both sided too...

Recently my GF had depo for the first time & had major fluid retention.. went form a flat tummy to looking 6 months preggers overnight (a week after the injection)...

My aunty also developed ovarian cysts due to depo...

on a happier note.. my friend was on depo for about 9 years..... no probs.. but it did take her & her dh over a year to concieve... but sh is nearer to 40 than to 30 so it may not be due to depo....

It will be different for each person & if all else fails, try it & if you dont like it dont get any follow up jabs!!!!!

HTH