I'm very early into this much waited for, very much wanted pregnancy after a chemical pregnancy. I am 4w+4d. I have been having a burning sensation in my hip joint (left side only) since my BFP. It sometimes goes around to the back. I think it's too close to my hip bone to be ectopic (no bleeding or spotting) and I feel it's too low to be a kidney infection. (TMI) Can you get gas pains only on one side?? Anyone else experience anything like this??