Spotting at First Trimester

i had those about 4 to 5 weeks into gestation, lasted for maybe 3days, it was very light you would think its a precursor to a delayed period. or it could be implantation bleeding. though that happens 8-12 days after conception. OB did prescribe "pampakapit" and advised to take it only when the spotting continues. i didn't and it stopped. am now on my 31st week with normal and favorable stats. best to talk to your OB about any abnormalities you observe dear. better safe than sorry😊