I think i need your help....

Brooklyn
Since I came back on my period my mood has been at its worst. On the first day I told my boyfriend I would be round everyday so we could look after each other (he's in a lot of pain with his hand after being stupid and needing stitches). We've been arguing a lot since and I feel like I've been taking my mood out on him. 
And now I don't know what to say or do? 
Any advice?