After 5 months of battling with ma own thoughts and so called depression,ive finally figured out my problem!

O-C-D-
It all made sense to me now!

When i was a kid,picture of a pig would keep poppin in ma mind even though i didnt want it cuz someone told me even thinking about pig is a sing.so i was like noooooooo and i started crying when it wouldnt go away.I asked my mom,she was like lol but then later ok ill ask my father.
So my grandfather was like,ok why do u think pig was even created by God?thats it!thinking is not a sing.I developed my own meachanism " when i dont even want such thoughts to come,why should they bother me? "
And i was happpyyy!!!as a penguin LOL

But then 7/8 yrs later,I got really depressed cuz i was bullied at school and i was studying for an exam one day,when i realized i wasnt able to control my negative thoughts related to depression.
This lasted another 3 yrs.I mean,not everyday it happened.But i never really controlled it until just recently,I linked this thing to my ' pig episode .
Because,whenever im beginning to study or enjoy anything,this depressive episode popped up in my head.Finally i realized this is OCD!

It was difficult to control cuz I was depressed also.I read somewhere OCD can be a side effect of depression.
Now I know this is just a thought thats not lettin me study.
But still at times,im afraid of this thought.Like it can hamper or become overwhelming anytime.

Any advice ?

thanks.