Herpes is rarely acquired without intercourse or oral sex. However, your symptoms sound classical for that disease. If your boyfriend has oral herpes (cold sores), that might explain your getting both sore throat from oral transmission and genital lesions, the latter maybe from saliva on his hands.
However, all this could be entirely coincidental with the sexual exposures you describe; non-STD viral infections and other conditions might be responsible.
In any case, go to a health care provider and do it soon, preferably today or tomorrow. The sooner the better, in terms of making an accurate diagnosis.
Good luck. Post a follow-up message and let me know how this turns out.
HHH, MD