Need advice, anybody response would be great

Ok so, ussually i have a period that lasts about 5 days takes a break comes back for a day or so than is gone, but this time on may 16, whaen i ussually get it it was not as long as my ussual period and it was irregular, but i don’t know if it was from stress or not because i rolled my vehicle on the first or secone day of my period, so i thought it stopped because of the adrenaline, but now i got some wierd symptoms wich i ne ver gat and some that i do, i never have sore nipple but now I do, but my lower back hurts just like it would before my period except this time its allot more often, and i did have unprotected sex, but im not reallt sure what to think, I don’t really want to get a blood test, scared of needles, and i don’t think its soon enouph for a test, and i don’t really want to waist my money on one, this is so confusing and i have benn trying to ignore this, but what should i do, what do you think about all this? :unsure: Oh and i have some times been feeling nasious but i don’t know if that cause of a cold or something or if it has something to do with all this, i get sick easily.