Soreness around pelvic area

I'm not trying to concieve yet as I just had my nexplanon taken out on the 9th and want to have a normal period before we try for baby #2. I've been having soreness where my uterus is, it's not painful just more like a sore muscle after exercise when I put a small amount of pressure on the area. The only time it's been like that is after I had my son so I'm not sure what it is and was wondering if anyone else has experienced this? I took an LH test and it's positive so I'm wondering if it's because I might be ovulating soon.