I find myself in the worst state ever

After taking a loss of my 18 week fetus who I miss dearly. Since her death my life been upside down I never thought I'll ever be feeling so emotional, angry , and irritated by everyone around me. My side effects starting to affect my relationship but I don't want my boyfriend to know what's going on with me because I hold everything in our past to heart, so I feel it's nothing he can do to take this pain away.