pregnant or something else?

Here's the situation.

Two days after my period I hooked up with my best friend.
We did not have sex at least not with penetration.
I gave him oral/hand and he fingered me.
I don't think he touched the cum but I'm not sure.

Since my period was late a week late, I took a pregnancy test and it came out negative, the next morning I took another one and it came out negative as well.
That was Sunday and I got my period Wednesday, it was late but normal, aside from bad craps. So when my period was about 7 days late I got a sonogram to see if it was cysts (cause I had small cysts) but a small mass appeared in the sonogram.
The techniciann said it looked like a fibroid so two days later I got an MRI.
Three radiologist and a general MD concluded that it was a biconcurnate (something like that) uterus.

They say that had nothing to do with my period being late and thus I was sent to get blood/urine anaylis. Everything was fine aside from some blood in the urine (but since it was a week after my period it isn't serious) and my lymphocytes are high. Now i'm getting my thyroids check.

Thing is, no one can find what's wrong with me but I don't feel healthy.
The general MD says that the fact that I'm so scared and worried could be what's making me feel sick.

I'm just wondering everyone's opinion on this.
Any chance of being pregnant?
Is it a virus?
Thyroids?


Please help.
Anything you can say might help.