is this positive & question about a pain i have

OK so I'm due for my period in a few days to a week. Just for the hell of it I took an opk last night and got a line that's a lot darker than what I normally get. This morning I got a horrible cramp. It was different from a period cramp...it was so strong, achy and it didn't go away. It lasted like 30 min. It was like my abdomen was being stretched apart. Well I figured its Cuz I was ovulating so we had sex two times in that time. I took an opk again this morning and got another dark line. Do either look positive? If this was an ovulation pain did we time sex right at the right moment? Also, after the cramp I have a horrible achy pain like somebody punched me in the abdomen...what are some possible reasons? I've attached a photo of the one today and the one last night. Sorry, I'm on my phone so all I can do is post a link. TIA

http://postimage.org/image/46sm3l4j9/