Ladies I need some help please!!

Me and my other half have been trying for a baby for about 5 months... had no luck until last Thursday when I was due on my period.... it never came!!

The next day I did a normal clear blue test which had a faint line. Did another one the next day and it had a clearer line.

Monday I thought I'll get a digital clear blue to get it in "writing" and see how many weeks along I am. I had a first morning wee in a pot and took it with me. Got the digital test did what I had too and it came back not pregnant. I kept my morming wee then went and got 2 cheap early check they came up negative. so went out and got 2 early response and there's a faint line again. all using my first wee from this morning. I've had period like cramps, sickness, tiredness, sore boobs and lost my appetite. I'm also really cold. I've been the drs today as I've been having really bad cramps and they did 2 more tests both came back negative!! I'm now 7 days late!

Can anyone please help!