its a really good question,first of all you say you believe in god right?i am sure you do so ask him say please god show me the right path o god tell me if you have a religion to follow,ask him with sincirity.secondly, i will tell you something a quran has proves for every period of time,this time for instance is the science time isnt? ok ^^ i will examine that later,you might say so what about people who live at the time of prophet mohmmed,the biggest miracle is in the language of quran in the arabic language,at the time of propet people like poems and good speaches sooo much,they were use language as a challenge,for example,there were rules for challenge like sjaa tbaag many like you have to make a 10 sentence and each sentence has to end with two letters and they have to follow the meaning etc .i am an arab but i am not will knowing in this field,i hope i gave you an idia,however many people at the time prohet hearing the quran was so enough to prove that this is not from human.even people who dibelieve in him at that time they still aknowledge that the quran was amazing,but they do you know what they say , they said that he get it from seaten or devil,i will give you a short story regarding that ^^ so please be patience. the disbelievers sent a person who was very very good in arabic language because they want him to tell mohammed to stop telling people worshipping god alone instead of idols and creatsions with god,this person told prophet mohammed that we will give an honour and dignity and we will let you marry whatever you want and we will make you a leader upon us and give you money etc the prophet did listen to this guy,after he finished the prophet said did you finish,and he did reply yes ,the prophet quote ayat from the quran and recite it to him i forgot the ayat so please forgive me, then this person was amazed,and he turned to his people and described the quran to his people in a good description i cant even translate it,after that his people say to the people of makah to be aware to not listen to the quran,because they say to them he will make you crazy etc and when he try to recite the quran people put their hands in their ears.However every prophet was given a miracle wich is suitable to his people,like at the time of moses the magic was popular.At the time of jesus pbuh the medicine was popular so he was given an ability to give the death people life,to make the blind see etc.Whatever, i will return to nowday.there are a number of scientific facts in the quran i brought to you a very good site which is been founded by a former christian brother yusef estes and he has many sites, this is one of them
http://www.scienceislam.com/
Although at the time of prophet there were miracles,some people disbelieve they were arrogant,like at the time of moses some people say we will never believe in you until we see god
there was a great punishment in this life ,and there will be in the hereafter.
i hope you get benefit.