Buying selling(trading) in one state with other state gstin

I am having mp gst number.

I purchased goods from mh and sold to gujarat, mp and punjab.. This will be ok as per my knowledge.

But In January, i  purchased goods from mh and sold to mh customer. In short, I bought goods at igst from mh and sold at igst to mh customer only. Goods were shipped within the state only. Gstr1 and gstr3b filed for jan and feb also.

Will I face problems in Gst audit later..??

Is it ok using mp gstin or shluld I have taken another Gst in mh