Sex? Are your lady bits back to normal?

I live overseas and won't be able to see a doctor until January. I tore and was stitched up after vaginal delivery, and I can have sex now, but it feels like... something up in me is blocking his penis and at some angles it really hurts. Missionary position is absolutely off limits, but me lying on my stomach is okay.

Sometimes when I'm just standing around I'll feel a random ache. It's like the outside of me is healed but the inside isn't.

I'm 4 months post partum next week. Should I be worried or is this potentially normal? Does sex feel fine to you by now?