Help! Need Health Opinion

So im thinking of starting a cycle in 2-3 months but wanted to know if it'd be healthy or not. I'm 18 and have cycled three times this year. 1st cycle was Jan of 08 (methyl 1-d) , 2nd cycle jan 09 (Methyl 1-d, formadrol, masterdrol) , then april 09 (m-drol), and im currently on the last days of my 4th cycle (hdrol). I should of never done m-drol as i was too novice to understand its powers. i lost nearly all my gains, but my strength remained. i was wondering from all these cycles, should i expect some serious health problems or am i clear to do another cycle in jan10 (E-Pol) ??