What Causes Chest Pain With Foul Body Odor And Lower Back Pain?

Hi. I am a female, 38 years old. I weigh 142 and am 5 7 . I regularly play with my two young children and do a power yoga DVD 4 or 5 times a week. I occasionally smoke and drink (1-2 x per week). I feel I eat a relatively healthy diet (although I do use 1/2 & 1/2 and real butter and I enjoy ice cream regularly). Lately I have noticed a few things that are concerning: I sometimes feel a little twinge of pain right in the middle of my chest. Often times, it happens when I lean over. It s just enough to notice it, but it s not very painful. Also, I ve noticed a strange smell to myself. I think of it as kind of amoniaish. No one else can smell it and it s not always there. Lastly, I have been having some lower back pain and have been having trouble peeing. It s not a UTI and nothing hurts or burns; it s just that when I have to go, I sit and sit and sit for a few minutes before I can coax the urine out. Maybe not even connected or worriesome, but weird. I appreciate your time. Thanks.