So plz help

Arshiya

I got a dark line on opk on 13 july 2019 and it was cd 28 and tht dark line was only on 13 july.... so immediately we tried and thn tdy morning tht is on 16 july 2019 mrng i was having severe stomach pain and evn felt like gas... but hvng some wierd feeling in my stomach.. dnt knw y... it is just mild pain.. plz anyone help wht is this?