Cramps or back pain?

M

These past 2 days I’ve been feeling like premenstrual pain (cramps and lower back pain). Yesterday night after I went #1 I saw few spotting on my underwear and I thought I was gonna get my period because I haven’t gotten it yet since I had my son (almost 10 months). But today I have no more bleeding. (I’m on the depo shot so spotting is normal). But I have really bad lower back pain. I carry my son a lot because he’s been very clingy this past month so I carry him a lot mostly on my right hip. My back pain is mostly on my my right side as well. Is the pain due to me carrying my son? (I’m almost 20 so I’m still young and haven’t experienced back pain lol) or am I getting my period soon ???? I don’t know how it will feel to get my period after having a baby because I’m a ftm. Any advice will be 👌🏼!!!