So i was thinking if i send a bitcoin transaction without the miner fee or a very low fee what will happen ? would i get the coins back eventually ? or they will just stuck there forever ! and if that happened how to do that double spend ?
If you had done it two weeks before,then you transaction might have stuck due to large number of transactions in queue and would have taken even ten days or more to get confirmed.But now,since every one know that segwit is to be activated,transaction fee has become very low and so you would not be facing any problems if you send bitcoins with very low transaction fee and so your transaction would get confirmed very soon.