Needing help! Wanting to shake baby!

I'm sitting here holding my two month old baby who isn't sleeping more than 2 hours at a time and I'm so tired and frustrated!!!! when I finally get her to sleep I can't even relax enough to sleep. I don't want to hurt my baby I'm just so angry and tired idk what to do. Seems like my bf and my baby are the only ones getting sleep and being tired is making me crazy. I try to let my bf sleep because he has to work, even though I work weekends, I'm the only one constantly getting up with our daughter, feeding her, changing her, and rocking her back to sleep, being with her all day. I'm not going to shake her I just really need some words of advice/encouragement. How do I deal with lack of sleep? Its not that my bf does nothing, but when it comes to the baby I do a little more. I feel bad for asking for more help because my bf takes care of most of the bills for the house but this shit is hard!!