What do I do if I broke up with my boyfriend and he hasn't tried contacting me?

i broke up with my boyfriend over some on-going problems we had been having and no matter how hard I tried to make it work he didn't seem to understand. I love him and I know he adores me. he called me the day after we broke up. I haven't heard from since ( a couple of days) how do I know if he is playing it off like he does not care or if he truly does not care?
What do I do if I broke up with my boyfriend and he hasn't tried contacting me?
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