Can implantation bleeding be a week after sex.

Linzey
See I got out from a 30 day sentence on May 12th. I had my period in jail started first weekend in May. Then had sex like 3 times the week I got out. Next week I had light spotting for a couple days then it stopped. My period should have started last weekend but still nothing. Having dizzy spells little to no appetite and sore breasts. What's so.e opinions on this