stages in relationship

so my bf and i have been together for 5 months now.. i love him more than anything and he really only cares about me and making me happy. i love his family and i hangout with his mom and sister all the time. they really make me feel at home. i’ve been really stressed about school and everything and it seems like little things he does annoy me recently and idk why. i don’t want to be annoyed but for some reason i am. am i just going through a weird stage in my relationship? we’ve talked about the future and he tells me all these things he remembers about when we first met and those times make me so happy but sometimes i just need a break like an hour or so to do my work or something.. he tells me he will help me with my homework but rlly just wants to cuddle.. idk i’ve talked to him about it and it’s getting a little better he just gets mad at himself when he gets on my nerves.. any suggestions on how to make this work better?