Rashes on back & breast. These rashes?

I Had an unprotected sexual encounter with my boyfriend a month back ; He ejaculated inside me and i got pregnant they i had a medical abortion and everything was ok . Few days back i had a cold sore between my nostril and lip and a pimple like red spot on the right side of my vagina . I applied Herpes cream on cold sore and it almost subsided .Yesterday evening i felt itching all over my body and there are some pimple like rashes on my left breast and on my back . My whole body is itching .The rashes on breast are pimple like bit raised and on the back as well .I have no other illness except the rashes .When i tried to google it which i know i shouldn't being doing it shows possibility of HIV . That scares me ; My boyfriend is a regular blood donor and had donated blood on February this year .So he got tested for HIV as well and result came NON Reactive. What can be these rashes ? And what should be my next step .My boyfriend advised me to take Levocitirizine tablets .