Early signs?!🤔

So my hubby and I have been ttc for about 2 years now and I think we got it this time! Because yesterday we had sex and shorty after we finished I felt this horrible cramp pain to where it would hurt to sit down and I thought maybe I have to poop (thinking it was gas) and it was a struggle to push because it would hurt.. Tmi I know! But later we googled it and it said feeling painful bowel movement is a sign and it's harder too poop!! But I've already taken two test and I got two big fat negatives! I don't get my period till 3 days from now so I'll wait! For more test! 😫😭