Do I have the right to worry and what should I do?

Okay, so me and my girlfriend talked a while back, but broke it off because her friend had a crush on me and it was hurting her friend. So we started talking seriously again on the 5th. Now on the 7th, she promised me that she still liked me more than before, so she comes to my house on Tuesday and she logs on my iPhone with her facebook on messenger. Now do note; She told me she was very sociable, but she also tells me that guys are always wanting to get with her.So, this is where I become bothered by this as the start.So. She leaves and.being a new relationship and all. I need to develop trust. I go through her messages and Monday she sent a picture of her in her panties to a guy. She was also calling 2 guys love, but I payed no mind because we weren't dating yet. So I told her about it, we talked about it, and she said yes, because we weren't dating yet, now they mean nothing to her. So the whole day, she talked to me, then I fell asleep, and I wake up, to a bunch of notifications on my phone, she was telling about 4 or 5 guys to text her, now why do it after I fall asleep? Why do it if they mean nothing to you? *Note; These aren't the same guys from Monday* Do I have the right to worry, be mad, and jealous? Because it hurts me. I do get jealous. What do I do?

Well it's normal to get jealous when we like some one and i think she is flirty type so she was asking guys to text her and which also means that she is not totally in to you