How Should I Spice Things Up? Please Help!

My boyfriend and I have been together for 2 years now and things in the bedroom have kind of gotten boring. He tells me that I'm not as active in the bed as I used to be or as adventurous, which is true, but neither is he. I don't know who started to do it first or when things started to go downhill, but now it just feels routine. Every once in a while we'll have really good sex, but its probably once a month. I know that my sex drive has plummeted and I'm not sure if it's my birth control or stress or what, but I don't feel that same sensation that I used to. My self-esteem isn't the greatest right now either and I know that that is hindering my ability to perform. I just feel like I'm not good enough in bed. I have very little experience (I've only been with one other guy) and he has soooooo much more than me. I'm not one to step outside my comfort zone, but I'm open to trying something to spice things up. I find that I do like to be handle a little rough (i.e. hair pulling, spanking, pushed against the wall) and talked dirty to while in bed. I also like being told what to do because one, it turns me on, and two, since I don't have experience so it kind of helps me know what he would like. I'm also terrible at blow jobs and I know he wants me to do it more. I gag really bad and I have a small mouth. I would love to also know of any foreplay tips for both me and him. I feel like one of the problems is that we rush into sex and bearly spend any time on working things up. Please help! I know he's bored and honestly I am too so I'm open to suggestions.

Update: My boyfriend and I just had another talk and he is really getting irritated with how things are and I'm afraid that I'm just too boring for him