Star, firstly sorry you have this worry, but it might not be the end of TTC'ing for now. When I was pregnant with DS1, I got to about 12 weeks, and I found a lump, I went to GP's they sent me an emergency appointment for a few days later at the hospital, I had an ultrasound on my boob (I remember joking to the sonographer that I'd slip him a tenner if he accidently put it on my belly instead!), and they did a biopsy while we were there, they don't HAVE to do a mammogram. As it turned out it was just a harmless fatty lump, they said I'd have to have it removed after delivery, but it dissapeared soon after I had him. Obviously as Playing said it might be more sensible to wait, but I just wanted you let you know what will happen if if you did get pregnant first. And echo what Cals said, this thread is for waiting to TTC'ers, don't you go anywhere young lady!!
If it puts your mind at rest, it did also ache, in the same way you describe, and it was mobile so it would shift about.
I've been shopping, I got gorgeous gorgeous gorgeous cushions for the sofas, how sad am I getting excited about cushions?!! But they make the room look so so so different! Only thing is now, I need some new accessories in the same colour ways!
Got a load of other crap as well, including some pretty funky pumps for me, 2 t-shirts for DH, some new stationary for DS1 (I threw all of his out yesterday, every single last bit of it, forgetting that he needs at least the bascis for his homework , I should buy shares in Crayola! ) And I bought a long floaty-ish top that should go towards tiding me over for the few days it will take for maternity stuff to arrive! I have officially gone insane!