Ladies Ladies i need help :(?

[Elijah]

Due to alot of past relationships i tend to get jelous and scared and over protective. I just got with my girlfriend on the 9th. she swears to me that im the only guy she talks to and that she only wants me.. But my gut is saying otherwise. She told me that shes really serious but when i asked her to put that shes taken on instagram or facebook she says no. i only ask her to do it because i like guys to know that shes taken and that shes happy. idk maybe im over thinking this, but this has happend in my past and ive been cheated on the downlow. Should i believe her and just let it go? or should i be concerned that shes talking to someone? i dont wana push her away but i also dont wana get hurt again. Help! lol