How long for early lyme detection symptoms to clear?

I began having a bulls-eye rash and lyme disease symptoms (flu-like, mentally spacey and forgetful, moody, reallllly tired) about 10 days after I theorize I was bit by a tick (never saw the tick.) After going to 2 doctors I was diagnosed with lyme and given 6 weeks of antibiotics. What I want to know is how long should I be feeling sick? I'm 2 weeks into my antibiotics and feeling much better, but still very far from feeling like myself. Mostly depressed, lathargic, stiff and unenergetic. I've read that some people say 3 days, some say 2 months, some say up to 9 months. Does anyone have any answers? When will I feel like me again?