boyfriend/babymomma

so my boyfriend and I have been together for a year. him and the mother of his child broke up about 8 months before we got together. about 6 months ago the mother of his child started dating his uncle so of course he was pissed. well thats was 6 months ago..now 3 days ago he told me that he went to pop up at his childs mothers house without even notifying her (claiming to see his kid) his uncle was there and so my boyfriend tried to fight him to the point the police were called. my boyfriend said that his uncle called the police because when his baby mother finally arrived she refused to. should i be concerned that he is still so upset avout who she is with while he is with me or am i just bugging out for no reason? i take constuctive ctitisism well so please be honest and let me know i im just vlbeing an insecure biach.