Me and my boyfriend messed up having sex without a

Patient: Me and my boyfriend messed up having sex without a condom about 4 weeks ago and I took a pregnancy test after my period my period only lasted for 3 days it normally lasts for 7 days and I took a pregnancy test after 2 weeks right after my period was off it sai I wasn’t but my nipples have got blue vains under the skin and inside the nipple I can see white I don’t know how to describe it they were sore but not anymore and before I had started my period I felt a small like really small like not above and to the side of my vjj the next day it was gone I have felt so sick to my stomach it isn’t funny puking and everything I stil have these even tho I took the test and it said I wasn’t I haven’t thought about it again till now I am only 16.. Am I over reacting? My nipples have never done this and 2 weeks before my period I had this aweful cramp and after I was completly off my period I bled really ba but then it was gone in about a hour.. I’m just so confused…

Doctor: