How long does a diphenhydramine (benadryl) overdose last?

i only ask because i was really upset yesterday. i shallowed six pills (25 mg). i definitely felt it last night and i experienced all the signs of an overdose. i believe i took them at 4pm yesterday and it's now 11:22 am the next day. would the pills still be in my system? i still feel somewhat sleepy but... show more i only ask because i was really upset yesterday. i shallowed six pills (25 mg). i definitely felt it last night and i experienced all the signs of an overdose. i believe i took them at 4pm yesterday and it's now 11:22 am the next day. would the pills still be in my system? i still feel somewhat sleepy but nothing like yesterday. all the other symptoms have gone away. also, if the pills did any damaged i would still be in pain, right?
Update: 25 mg for each pill.
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